WINTER ITIDN $1.25

1g7AR 5 ELECTRONI POPUL ELEXPCTRONICS

EERIMENTER'S HANDBOOK HOW TO BUILD:

1 -Digit Electronic Clock Anti- Mildew Ventilator Antenna Tuner for SWLs Auto Dwell, Tachometer Direct- Reading

Capacitance Meter 1-1i -F1 Automatic Switch Rechargeable Flashlight COSMOS Illuminated Die Keyless Vehicle Alarm Alpha Brain Wave Monitor Electronic Wind Chimes "

3- Channel Color Organ '- ALL WITH COMPLETE PLANS

PLUS... Fuses for Electronics Special Workbench Tools Model Rocketry for

Experimenters

A SCIENCE FAIR PROJECT

Check your Psi Quotient with this

`ESP TESTER.

BUILD&TEST aRcuiTs AS FAST AS YOU THINK!

Boat -: t

Breadboard Assemblies

Sexes limn

Neves. expensive mistake3

" '5415[

'n=17A:r°°""" honINN wire

6 Models N chose from

;.:.!;!IL 7995 5999 rf.TPSIMi:'"Z'

=== Corportion Ds.= ?.X PxIme SxNxillx4 Pao. PT [6!.

'55Zxxe: .0E cxx.

You get the same 25" hobby -kit color TVfrom three different schools.

You get this designed- for- learning 25 "colorTV

only with NRltraining.

Widest choice .e career.

111

NIt104it.the miw onm.,W

.-: >,,,Rlutookhow,e<dolee .......n. x

ELECTRONIC POPULAR

EXPERIMENTER'S HANDBOOK WINTER EDITION

COLOR CODE CHARTS ..................... 7 CHECK YOUR P51 000TIEN1 WITH

íN15 ESP TESTER MTh Aell Waite 9

./ uvemen.x4'1ras a,annr.rw4leAe. o1FFERENTIAETEAIPERRTURE 01500051 VENMIAIOR ...................lim AIDS 17 R WKERTSTONEBNIOCE SUBSTIIU110N 50X ... .. ......... 60111010.00 Callas 20 50L001 B SOLDERING........ .. . Dennis Hornier 25

- PRECISION LAB POWER SUPPLY C. U. Ball. Jr. 28 AOIUSIING YOHR TURFY FOR SERI COLOR ....................... DavidL. Waters 13 REFLEX ENCLOSURE DIMENSIONS .. .. ......... 0.0. LOSCao.H 36

--BUILD d PINK NOISE 50005ATOP ...............John S. Simor.mn, Jr. 37 DESIGN YOUR DWN COLTISH REGULATOR .. ...................Neifls St5O0T100It 40

- LOW-COST CONVERGENCE 01NR1101 Mir .. Mael S. Ching 41 SOLIOSTAIE CIRCUITS FOR THE EXPERIMENTER ...................Jim MMN0110 48 SWITCHING LOGIC 0111 ................ Robert P. Bolin 52 WHAT HARES TEE TRANSISTOR TICK? ,ROOC,I U. VFOOJ 53 PRACTICAL EMFANDEO SCALE MIUIOHMAIEIER . Davits R. Corbin 57 A 1710 /1100 INSTRUMENT SENSITIVITY BOOSTER Jar -ez BOnRlornn 61 BDILO A RCHARCEOBLE 71111111.16117 AAA !aONarncy 66 AN ALPHA PRIM WAVE FEEDBACK MONITOR . .. ..IVIIIJIBII Waits 70

SPECIAL 700LE FOR TUO ELECTRONICS WORKBENCH

MODEL ROCKETRY ........... ..

BUDD A 115 MHz PRESCREEN

BUILD AN ENLARGER TIMER

Frank H. Tooker 76 ...........Forrest Mims 80 ...........Daniel Meyer B5 .... AArinI n. rinnogiHri 88

.,..

RASH TUBES: OPERATION BAPPLICRIIONS .................... Pichord M. Fisher 90

STASE LIGHTING EOR INS AMATEUR ...........Strewn E. iMargison 93

1034051 ELECTRONIC THERMOMETER ........................James R. Squires 96

FUSES !OR ELECTRONICS ... ..................... ........ BUSSman Ms,. nip. 97

NORM AND WHY Of THE SCR ..................... ... .Joseph II. 1NjeN 103

BUILD THE MOMOOICICHMON

e

Michael S. Robbins 107 R aBU :w;npy

anu rv.yars .x.x. mwNS r mS.ernnl wrt.

AUTOMATIC AMPLIFIER SWIM Tommy N. Trier 112

ELECTRONIC CIRCUR ANALOGY RUIZ .. Robert P. Belin 114

ELECTRONIC WINO CHIMES .. ........... ...........JohnS. Simonton Jr. 115

SIMPLE COMPRESSOR.EVPANOER ........... .. .. .... . Craig'WWerlon 140

' EIRECf.READIN0 CAPACITANCE METER OalC 11(10000 141

A PREAMPLIFIER ERR YOUR SCOPE .............. here Gor0Cnri 125

BURR LIGHT PROBE torresi Mims 128

ANTENNE TUNER TOR SWI' A .. .............................. Carl C. Orurxller 130

OWELLITACNOMETER INSTRUMENT ........... ...........Edward N.J. MAarpuuril 131

VERSATILE IC TIMER ...... ............................... Wafter W. Schop! 136

MLR INE OECIOAIRON.. Lewis J. Newmins 138

VEHICLE ALARM SYSTEM .... .........................Frank J. Di Elsi 141

DESIGN YOUR OWN COLOR OROAM ............................... Duryl Sle0ero 144

BUILD A COSMOS OIE .. .... Michael S. Robbins 146

tre. v.r r.MY Camp :.era mn unuml M' SINOLR.IILAMENI TAIL LICIT 000010RH ... .... ..................Mamie Seiwr 149

TEUTON SEMICONDUCTOR BROMI IDE William R. ShippIN ISO

A

I

xx P. FÌ CR X%nçnS!'inH

W.uNU:rm EA.:ARO I. RUM 16. are

CN:1.r

nuhPPR f.11.L1100.A04,66.Ati.riw, 10116 413I11-03..lOV.WAn

.R..fAN Ff. iiéññ !:,LRp P... <.rren,, ere.n...r.: ra xnrN+.

ELECTRONIC EXPERIMENTER'S HANDBOOK

WINTER Rol rioN

,I:E724=1"

V.T.r:;';'.F;221.:Z`..47:7476

JAMES, /Si o.o. Box tri2 BELMONT. DA. mom V.f1=`="1"....".11;!711:7=1A".."11t

OM) 592.8oso =7.,:mrs

MORONI, IIKRIN IN-INS HANDBOOK

COLOR CODE CHARTS

THE EASIEST MONEY YOU'LL EVER MAKE.. BELIEVE IT OR NOTI ITS TRUE

.1 MADE 135.000 IN JUST 1DAY

AT HOME IN BED WITH THE FLU"

in action rm malting thousands al eollors avary waet whether won, or not...

'T.glg:1-7-1MITZ11"0714-ror "VOZ2411,8C1?!=

gammv,vam

EgtiliMEMTZujrdifft:ik

No. la ox a ..... sanvica cute tilt! Pax t a",nancalava vatiosOOK

Offi""i7,

COVER SVORY

Check your Psi Quotient with this ESP TESTER!

1UI !: TUN SOPHISTICATED TESTS OH 1.tif, HE MACHINE AS A SIiREFIRE PARTY ;AME

ñi:i. ai w.

low

v1 tir

u,,n z..,.,,. 1;: MY w, ,,.,,111, Iv, i,.,,,.n. :nSu,.uu.k .,...i :ma x a..thye

Il:a -y aM bgi.'. ,u,r 1aa dn. na.. uy'W..r,m4f1.WF.

<.'f.ú6t r+T,eiv nn+l a,,an u. uM.'

i

.` pi; ..a,Ñ i fe+,.:tireaIZA. ,,,..

+.a lm.x %

a.,room

r.

.CrRONIC FM 11111.117611, IIANDWOK

PARTS LIST

4 V.11 reWIISI

ti

L .4a 'I lr 01nu r r4. SOS a Mr ILr J:.plx.m 4rP ll m.

ulin .:.d .

raw .,ll .,mIM°'dAr.iá: ,wn too. Lr,

.. . :IL.RC ÓI WLSII`1- Theory q Opnntlm. Nlmnç r Il:r w'sl -Euo:afrs 4sá v, n.l u. T..,J or

S.:PIr J li:sl Jcp.r. N no. 1.. rnwx Tar I.FD ....not or. no um:ln. ou cLn

Nswllnu.LLUU:.w1,.p'.. fkaaN.s:nu .r.y oat IMN.aaI.T.,lapuLWJ.Iy af -... n as4 al,Jd. LU's.l l Mumn 's4.. , p.4.a M r.sn \I'A.< rv.NnY rvll' :1q.sv *s I,M`na x u Lwkli!. .. Ilx w rcw 1L.:r:lsym ha .s. nsl . .'.4:.,1 w .Wlm :4 u L rhJ. 11 u..l

ra:dn.pm... sn n.r 4..d1 \iJ.. sisyyr ..'M. mp.tw sHr .: . In '. '

ç r un IM. i uü wMVlrr, A ESP-PF or pm a.JW:.-

dsr M.s. rN ou r"wP w ...e ._

\\l.:r.i:M,. ..N-.wA.LF vwN. Ixu Il.:..á. A.y:ptn v.ax:lla..n:a. 1 Circuit Ouaip4a. In IM .:N+,u Á a'i?J:J 2.;.' "1 o Iadn: :arvn L 4¢. 3, aL.e..,m Sr w oyl.+. d:a IIrPvQ,nñTM!I.i4rN'rJA:dn .nJ Vie &wrv.ud.Vie +,<::,'

occhrpup:'. 4 lgr.q. II

:.eVifV.A M. .N ,JLk..s.L h

:mi r4.nwlrn mu.praM awl Y IM, are IM.unn.

Ity one ,BN dot, FLn

rlm....n.,Mr.(rLF.

I.4

a:. mouoot . IM r,.xv wl, Mr..: LJi

mwL'qMya.AIF month.

"A' .wJSb.}}s: 4sè_k

ndP. 14tJ1. 11m L.G

SO N MI :wt tS. 1Jrnbr. L..rumA S9, ka lï- .wit. .wurs :rom

ri.t,...,

'11Mmrpaa :} nllA.:nl rc:gi. the two

xkpu^ .i.

1..A..

unylumil!>ohu.'U'uemT,n+

1Lnñi,a... awl, 3s mil:.,,c.:A ukhil.. . Ito Ol.oe ..al.:,tl

PAM .wwa.hww,

ieh

im. fL? : a:wm uw,i N kniylli.IM1.xL'ulMr:ak.s Un.

F v7. cm.m

n I

I m ww

w1S WM omit :M k k.iy,p... MF IM1e -n to "11^

wixiwx N... 3s mPDao.:k flex 11e .w on M rook ia omimie:n. (LP

ove. howl v l. ro-rollo hìµk wale li llx

a.Mkw

mow, u xW ú n

1C

,0 to hp fIw.ch when

mnT .Ike

.a:lin: af lapn.m k:1

R I:nr.malñ.nu wyY. a'?IF: ud .t-..Y tso moot, A'lh! holt

Otto 'Pkna:J. Ì,iekshoot Fnf.xkndn milulMxnh. tot>

kD-..K.t,e k.. I.:+ amPe W'1D^x`iuµ onnxirAx.la alw. '

.L.! t+mi.ó,wvÌn.Wo±.D*Mellrc {wM. at MO aD.aJ a:nwey W. wool moor wo.

ELECTRONIC SPIRMIXITII,

aL:

Mr

M "REX LED

IA '(1

om nx, ..mo.4

m.,. wl PA you 43. PAM. En

DO' Ed 1114 -Ro.

..IRi rrr11 i s.YYe

.I I adr. xllaM1n. Ì .1..1 ,I .dl _\_' a

.. 1'.: Ii..1a J r,+;1..:. 4.1: a,z6vL ...J IÌn- i:be.n Imq.,x. J 111 n:.be pehs+

;Iv.. aill:b.-:J..,nn . ..An.an:lìi. L.ollnnnb..-:,. .

,.. uJa I EMPIP

...b.:l Ì:I.AM ,:r mx tos ow- J. I

11 ,la.

11,1.4.111

.I.nl.. ñxelulMl' 11,1.4.111

:.Vw. <'A hi.. .,.

POE:P !CAC.

tE

àà..Ai u,JIU\'ö IEEE I:. Idie4i

ia.xL.Mrv.n4..Jn^at nya { Ç,S+id

S'

PARIS MP

m3l.d' A ri.MirM T 'oh 4a:i.

TN. rower q.k.d .rn 4.. r.rrL y. . TplrlM

_a .AI. TM rurd..mm.: rv .h. .003 .003 .33 -:

ho :rk.. n:hç.w .n.IJalwn r

.s4d.

Coapruaüon. I166.4.4 dn i'. .Wg:r

~rd.Crev .v ann

n

nwkN vwoe

orn, a .M .

na:4:l.xw pxblr. Ìn pn' 1 rM.lirn.:r anPBh-r nm i I n.

sot. I :le u.ACr vryPk. nM Irwd Id

.S IW :+s..dpr dry.ko

4.n IA:g'". 1 WrRO.Io the pro, u:pplvlb13.

i. i ew. al prrs nrc i. 61,6 v:ri .k:n41

N1

IrrnhA v.IF.r<bFnIO' ip! lo do.WdaM 6.n 'reñnls

WJ.vp.n4 'n hr0:1 rM a sdl Y. n':reg wi.F .M r yAlalz laa

Ipur n11M nAr.-mlJiie.Inwhl.v.JLu .nlTS-:Fn. urennwul

IM hpe suùan' ^ the Nest, }itl s. Irring s

and

I:rv do IC'tól'AnF: pan. Moo: gurFx Ja+wu MMa m yr rM v.i..n .wa

.l:inlMrigh:p/urx

Probabilities load! egalmg for "n" - 16

ODDS

SCORE NORMAL BINOMIAL

nit5ói .aó ró:l

ur

Ta0.1 ti,!:

.11661 360.1 633636,

Afro Anhhirrr rM Lnp.' la y on v OuAq.0 I.è:lr n1111rRd:l porno. '4iIw.1S.nhx.lia,drw 1.I0>'.'frq u s IIn::Ì y rwY logrwyd'+rna. :our .601:J+ Ysvdiog:t

wt I: rk.id rcum :M Lirylap

nncnÌla. huk .y IA lY.11lMn

r..d iuol.Wou.1+..1in¿PéM rnnMdpkurçtm..

, c.1i Fr7f+ N L77, -,úr'

-Li Á;"

E " I -

r

:lUwrIn rzL InM°

..;

PlffißNNil& üMPIßAiYßi sASiMiNi a YiNil`Aißß

KEEPS OUT MILDEW AND MOLD

WI nu ASHL

.0... II o

TZ.,= '717,1Z2VX

PARTS LIST

tonotrvetbn. 1lw e4 I

I. Ik :W:u . pvt4A DI. m ke.t I... I{CI .., (rrnr II:u Wwra d tbc .v that the

a ..rll :N ..d ,A. .t Il.rvrnt:::l

:4 5r xla.cn:w n d.:u1

Calibration With d1t ma{ II AM' 'Ivre vFil!rr for

A:w lt..: n M3l:r nA Idr rul afi.+r h M.q :ryav.lh 1n: b:.bi

.ude In, Rs, 1Arb:r- ¢ :Ar .: a.

..idd.tL.y. . t.dllp. r:,., r a.wJ:..... 1r.dn.e

51.1:.4.1/+ I.uss (aa

ausu. íf11 nr

r Build a WHEATSTONE BRIDGE

999,999 Kesfstarrcc 1/a/ues to Measure or Substitute

Sv SGFSTApny ONUS

,+.,:

he anon ea a Ins, inatrumen1 to mascara , hem praniaa amnia, main, war Inc so

ahmic no ha muggca into any cacuiL

SUBSTITUTION BOX

4.

il

Constnel* r. "f5

$0.; ita its toMI ava swI6

',Iktri.:=-1,:d antl 1,e

COMPUTER e0AR0 ORAOB

HIGH POWER TRANSFORMERS ááó.w

9.%ßd:

L F

WATCN OISY.TAVT A

®äfrÑEWroy.11II°.w. sir.m

®.M?""=4 DE CHOOSER YOU CAN AFFORD TO G..,

r. .. -U th

fr +ul )3 p...p

to ottt nA W

;'1

Vnl w°i a

,m., ..a ,... ii,. w ,;

unU.s. n ro fnrM

Solder &Soldering

Ilam to make ,,liable soldered connection,: and insure

thm yonr win perform.

,en ion. $1. ohr m >Lg.:

trore's or tin end /red solders.

,10.1,1, dorm. rrharm lurch

-mar r.hrehrto., melmer ors on', Ow rod, rrr 11.1rarali 101, th, rar rem]

error Are., m1.1., Ion home r

Trohreer el or eke ow. e rem ior.romee, err

.

New tools you should know about

Now Teflon coaling on saws vo lossfier Teflon mat.

Low-cost orbital sander Roll Mon the Pr frMr 's áet.tsná

W

na or.oeree ti to mils

yrlry Pont P Comm

e1 ¡iaSYS- inn.abrasi e lobs, S. MN new mrwee tarn louer Arta wet

M Wes toad stains your son slims

binding. tn. remains teen. of x standard Sal,. pa ÓriceOto woud tone ^toc m against loss than 115. Trot r loos [a.. be

n bon711 mepmwr sell

te7.1Il1 1

nS in m. er Ce. b... macro, we maso far bleat

er roar roto

Slimserts replace stripped threads Pressure roller speeds painting re.P "in,"

7,7 áv4n pe drIn, Mor tamp It

me old

vlcoal bX. Omni

apnrel e rciMXSltteer weabnnl weata an idei anaotq finisn.

res frw No. 1p prpÿn i4 u lamely fur boll painting. &as su SUSS mots Coma in In. In both 9 Pausal NM SAL Pirca rx J]IS Snrnnnest Mob Tool W. Los angtlrx Cat orne, Los O gala. We,t.

isa rPOPecAa MECHANICS

1

ea nor .nro

Woo goo on the 4.nolt 1144. nutOw Folr et On, nvoon.

Conn.:mhognd w

.3 nod n

od,.1 holli The cimor. o 4-nonc.r. An That

JULY 1%7 151

b:

lo

MOOEL

RICKETS

wk s. r,..AuÌl.,á

,v.leó to In !:,vsi al

a1/1

anA ,M n t M1vl. a .,,:..ä:, cMe.

Mad. t,. W.,., I..

41,4 os

Jool.l~ .luc

IaO-nbllM1::l,,.

C1a

4u a:: éaus ï a, I-. r 711 .. ,de=

POPULAR neCH,11,

Getting started in

model rocketry Here's hem to build a battery,unerated launcher,

remoteicontrel Iging station and a solid-fuel ship to make this modern hobby safe and exciting

Ov CLIGDA LI.o111130.

77,271211.x. am ImlOng .krrte. iw.aor 4.0

I....01...r 4,,ce Ivor. fact 111 thtitia *.v1

,m1moinyi immile-mme 0,4+vIde an, walraiag mmclt

41,re .Inet.mx ,are when ...new NI: moil, nvl, le; hol0sy limps :310 ela,a1J. l.a:eor Ils. ocla.I adune uno

cardItagml m,M1 AAA oie

e, rimier mid. om mach ro1

fael au., The emindinot tlevOicay

*Mr

*

levers d,uuW L

h wie lukt. ..1- . float. 1,5 nWeu.m.Teb

nl

aw+.11yua; a

Outboard Clinic

na

Ul br.liNa +

O

n.ea y.e.Wwa.

wk

miatr. lin.Ir. n=rnauu,.sra.u.

:rce,s,.A Ilw.:.ç Inal ant ell Kn Witt. iol

150. C/55 Tplt.. aeaeyMi.. I. alw ewe wea.a a 04.

41.a.

4a.v uf Ilft

Ilie ar:.ne

51 3.1 be eraN+e .a

M M:.iryn T: r :afl.

ensiinv ...e.,le l.

:.k.,kse elft II J.e ,`.ah

ou,. ..m.,,.... ... JULY DO

ming.5 .a

ea

Iht, 14C in

tree

veyW u' WVpNaO 51,0 limAi5g arm rani ea re,

r.. ñüo ip

I»izi-áso ás ,als

7.1'd t s- Ap

5,1,..11 halo, Ito:Ai, AA. IAA Io 11,4

rt.V/e.T:rtn!':'inn=.id;urtn:12: A A.A....gietn: rip AAA IAA boned

I'5 'I

'VII: .8:A AA, Ail ot-Aurn, Ai, a We

re ...to, C.,wo iT, iAAAAAA1

171.S; St1/4t4 rm. p,,rAIAA 1A3m, .1,, 1:0,1

A.Mor pAA Ar:16, ImAng. ',AAA.

FAA AO tern,erztures

COLUMBIA 4 CHANNEL SO

Solid swe SO Channn. adn3:0 2 nn,22 OAK in. Den.. craned or mntIA,I. 4.c.hanrel.

LED READOUTS $.20,

The price in An a Ir... IVC lave norm,

'DriLvplalt .:txM" '°77::.;11

PHOTO STROBE For nest Asnmnaticesnman.Wil! rithid LIM, and IAA, ,nveor. Newer 421,12101 21.12.20 spa, SAM

AM-FM RADIO

I, cone. e irISU e!sue paw. ne lunoLA SwF* 20,2Iif 490.3 ,on. at0,2 215.00 !Sir ol malohng ,0e0122es lor attn. 25.00

PO Sox t71.1117.1,.

Now...the most enjoyable, .dilowselliprojeot of your life-a Schaller- - [Electromo Organll

t-

PAC

1;..?".11,"",

PRECISION LAB POWER SUPPLY

BUILD THIS REGULATED SUPPLY

WHICH DELIVERS UP TO 30 V AND 1.2 A

rM1nr La. rrp

run

U1. "drMl4nor ur Taran

M1a i rr.ms +n.k

.Lt ht .:Le I.0 Ran aroç adl4.n.nrd:n: nX.Jaiu

PLTxd4 ryx.ltn unl :.ad

n

TM1wf 1 Udwrtkn. Th. n*r'!+

1 }i.: r' xlan., danwp' u w m.n ,r I+.,r, ..l .. 4a ,Annr r. Ow 4.1

IxH} -..atiL. NLCTI ..0 N. y' ^I".nL <J.1< Irc ..... I .M IS, 'faLcru xm qe

.Dis..l.L..f.IM TIu 4\

Iwv'.ya+.NJ tx iM rcln.n. .Vd \ lp TMfedhD.vICCG^ \e1f/ae

. y . nn (i '. . amxÌxn

III If ! 1

:" I ` °

EMT SJVIC EXPERIMENTER, x.x...

il.lam v. I I

V or waM\é:le Y' ers mount wn LmN la anexrc rot. _, rM:leMl aC.W. U,y.lun Sn

o.áa .a,a. ú

Ni r Rll

R.2. TF. I.uwr .q

rie eAe mine. , un .x lair mara. .11:' 477 I ll .23

'!.'Î.-kl\ nJ 1

:L Rug. I J ' that y aJ f.- JR ot

,.,.. .., .: ï Lla.11.eln

,lrk+e.

u:aJutr!ww.,T u..lRp,liI

I}:. IeweAx ...:. ::il:r mm.r..

:..1 41 a

ma+:el..l

an'a la: 01 ,

t : +M r+

Pi,.; mí,m

wIñ° 111.

ca.nectl Nraxl

11

ur:ilxuer rura

:.. f::::n rv+:, l:..ui .A:. wal. vuS Ix

It nM ANnI a, O:v av:unc.Jr. Aml: 10 ,Sw:d In a.rrqW

I+.. Nr r.

Cxe.at ..V Ise. Venn pal., the r1-1? .,p:aMn...rcnrc4 all wiieR.: ..... _._.. :... .:_.. a... ._..... ._....

(:l

o

.r :Am:I:nA4.+LYrt,:x:R:

PROJECT EVALUATION NIRSCI4NOOCA LABORATORIES n::::pphwas spots. Nre:'

rally Mee th

:rynnxm man

iññi: wi7rv+e-.nm. as I

mad o Stage M a Tr ou Ille

Is0.Jwkrc krxawYlrOnl 0.1.1 it MriwWr..

as 0.Mx

m¿:Lirwn we:.

r

conesturaial la

YPrt no IL W. We a nnn m nrh !:o+:

landed

11 +

l U; l a:A iwl.,v

ol owl Ili, nr m:

pa n Me

r.M. v:A.xçe wrarnl luk e: lb: pám

n: an:' .:tv. t.vv

nn6!w: .nA : Y

IxK an+ :tVln L.

Il.e,rcx .:nrcdanlM:NrMI.rcl.Rr

lM r '.. Sv wM: \aryn n:011e. rcA. :M n,rr:Iw:.urnr f::+r

N SnarJl lp a ll: lndu:ll4::n

14TI.wryhea

::J aMMv acme. uM, . thc.Inge.

ELECTRONIC 0.111,,XIIII 11...00X

adjusting your TV set for best color l'ravurinre ::aril J.i pa lika.pon. piCecarr

BY DAVID J. WATEnS

Rm a r:i.T\' m.d,rr, mvr rnprdv -aWr v J1:r :n'I.'- :

I.w ,Lvpp N

' u:6 .M

Ya ..

1 I

fa...lw ela. .a.lm 1'hçl........ .,I...... nu4J :ay:+: a.:fin J:a Jv pL-n ., II..I. , ,

LWd.a :.Ino...i..Yn Innl.d myp:.r.:lx .d n F.. .::IdmviLe,o -..1HFnC.An,Ñry J.:. n . . . A '

1

:. nn .:nÌ4Ae.iJsn:.:.vÌ.n. uvFO.yl K vrJ:J:Lld:: b a FI ek IL; .1. ( de

: m hrp. Ar 1xr pu -` JI '.ì: nln c:ryavn k alu .w ..dl. i, ..nl. 4 k dx Ja r.a.r'isfin p n.d id Mpp .

x mn

J: aoJ.:.,.u. .a:Fa:e aa:l InJ.'.

n + FI,IC

JIFkxnl L

c¡rhwlj I v T

T:Fe

a

rs 1 thy C... ' d

pon IJle nrl:bm min:xp:da.lnl. die .nx

p..ilT Tex and WIYaNax.

III 4,1103 :31., asdloudCnL.C4

rcR:L:il uvAr p:nu and I, u: i..

.: nr, AnAM1w nM4 . T Mr. :ule,. !61.I ;Dow. nv x

n...:nn.:,n l.r

Ìnl nanr p:a urc PAK

Lrvaleax. Can!d:+ I.

_ . . 4r , A tie pklnrc In color :e.pw.n.. 1f

ny. mole s tMl exist, Jepa.w tir pin r:w. lnb again.

o 1aWFM1 Lr:.n,aa

Ftli 33

Mow eh

s.nMrv A: 4v rthw :.n:aA nrnnM 'oT

iákWl xAA54.dI.M.M:.i.n.N Own.

mer.ly lrAü :-denn lvu ne. url..+.Iwn. aw:

.i m..huy :ünr1 00,41 +1

. Lnl du. IA dA« N ILe u..! :u

.:vliudunvda v I:e :vwk. Tun úflIR. p:.avnn f:wv Le nunrt nal

1. TOM Iln .-dui nw4d fny' r,.twkne.. Tnn plu« a elual.r

a-id wk: Je.w.:.rla nlMy nlMnek and IIK eM nd i:r a I. T.:m m M p.m aM aiNa IAr rrcr

vp nM:l a I:dl rJrw 01n anm.

.ndm:fl.'m

r

Cl.dr4T

.ck'.l 5u areal to A:ueL neoll::nR eh? pa lo mxlw. :l

A I, lain no ten IM wdn In:vnd

+:klla.nln 1IxY.: . zinÌ :Alau IL. n:x ui.

5<I Iln drA R n.ann.LLiw nArnlMb

4túx dal 'kpr.l IM l 'm F

xWa rvL wrr +nl rnRl nnl

appnn NewnNhm am pmknfl:m h.n-al:nrv:p the LW:

rm Inv::ne.l,:.aia nl ..

TrN+. In n.+arniwncc wa w! Nkrv.:hX

a n I

.F W 'Iarn:IlNry'dnWn%

14v1a11.r+i M:adx Kw,. No,

mW:údxx

Cher CarvCes. IIneNB Mlercen.A r.+Taurt m a

ptw, : co NI, Rn çmnane env rl:..r no!iv 1-6p.1 nd::i. aikal

RDÑFNIC

k[u SWIG JAAIST

E,

-- 5/G HORIZONTAL

-- R/G VERTICAL

- - BLUE HORIZONTAL

3:H.V. St. .-fiamor's ,r1liol :a Atria ei,ve ,,,,, aml kw. IM1e...an el mid., lultrnime

1443..0 it 4

itt.e.r.1 IL: Ilk. CowIli the a is .41 G 01,171 R d Ap,or

ixot

N.-1,-,hol linl

yaI MIT nervl 2,Aa4rol, lor ror.

Alr,ogh Ihr 11.+N. :he

:=7.!!r+Z=n,...4r47Z,'".

nor, asan..a anenirointe °viva, in. al lbe rvreirivrs avi.1 have lo

in.LiV nr:4,- .1. tarp :Ite Ille,111,iAimi real, a

ii.vertro. xi!

cf :he pldHn will be pc, ww>, (tolelaNIK.L.w. u

m61-1, we, lina,,,or, rr,Dul sior reg ekaurr, sin,11 emir

rer nww.siArri.

c mime pro.

extV;virr,=.:nt" U.= insIn elaq RAM.

AN EASY WAY TO DETERMINE

Reflex Enclosure Dimensions

BY B. LLSCA01.1

ro4

elICF110141( unawvote, nmemor

BUILD A

PINK NOISE

GENERATOR

GUT OUT NOISE MI UTION AND SEED TODD f. OIL

xunin

{ ,,ne,,., ..,,Y.,. c.:

..W n:I u,;. ,.

+II eIlk r.d. I I...m'ilaFe> IM

Lm.Ilu:ll

lì

JOHN S. SIMONTOR. JR

.°47!2-.!!!--

t.

;:"',.F.î;:"n."..`>n"w'.`...

..11 prvlabl. o- :alAv I.

Frry"".vaWaw r TbwryMGrtiláLKr.iam x.: mJ nAl Ia .aAx i.:Jaln d I . II.

a01 na t,p Aa{Ls IweabA.u+

ì% i.x.,.x it rev,. rywr:r.IILFFIIut r.la .., :eA

ski Ir: , IAA auk W Ill Inrn xey. b,'e lnnrnLNxnvllalinrl.w il

Mnry a 14 t....:.IF. mat. la ^^aI, :n xn

q I,:LIn T s.Ña:.Ae a,x.hlLws q'nM." r ru F InJVI. .' .Wwd M(>IFn e rlil.w

:A lilb:bal its :k. onsoll Ra. through lb,

.Inl A f I b

pria 1 linu Vdt., n

OR 4,1 Le VE Art 1 A w6 ca,. CI

thieri :a.1 :. s nJIReJ, n .... aW..l M :n.awl n .vnlr:ae rr v

lami s. a SrlJ:ùiznunl.ú:ilu tlr vx:lnl .vu orAl her if .1 held

C.y.rn.:J f] .bxls w d Ib. hitln ImPerw , unrlAxJe....vr fnr:lh .0... : sa.r:Jl. i.l mad Ìnyxxw..> .uA:út II. varyAUe a r:s+l

.nllatr kr.A. ü.L:S Ilc awnlJ < ,Lrrl.l..x

ConLlluRion. TLC. re .ni, . dom::

reiyaamn i:+r ILsI :nJe .p !Iw. :I d IL. CLe:

ro ..[ r vr..m a.n o.w v.. a a : IL:r: r::. n.i: J;ng nre u.pLOnf. .:d

Ar:,rFürA. fart rF

My we *+xlle Imtl.:a'm a

aa.Arm rr.rv-lnr oar M. xH.

., A..

r M, Awu4v lvs

1 <4

rlw.. N..r

<.n Fdc Fx rM1c:.Rrl.x.lsd

.xqAecr4sx M1rF..M1xL. xAA. e4..1 ma' f.xx rM1. (a:. rI1..A IL.

kd4.sS.4 t s5h::rA n.tl.4 pFmw ..luuirb IVr tlotre. jsrr

un(. <. rFr n.4tip m rA p-r¡n4: ficrnvrws. TLL 1..:r.i.xwrrsfAm.v

r. mm.i:lo-v..Iea:V.irxwwLlrxn.r-

. p:rFr

irc:..:A

n..á.mxr..orin-FI-A.Y :r.e:<la ILm . tlw I. r i Lee1r IIw Im:m. Ime! Irou

Haw Ta Ult. .0.11.t1uÆer ja:r

1- 6 pr:' ç. Iwxxa JI . 1 k 10

w..Ì..11.[x . nsllTtlr :x 1:.Irrirw .x

.trJd }a.:4 .erm. k ux rwxl:m :Lr r ir.r I:vl

DESIGN YOUR OWN VOLTAGE REGULATOR PUT A ZENER DIODE TO WORK

M<.;I .Iw

.,:.Jfw ñ!f:N'or¡:;I

Jude. Aa nw4. du, r-n'n Ilwl F .d. Rol

Il ,.v a Tl:e n.b.n: 4.,n. Iba nnrc,,: Mou' i TL .,)'MIl v JndHW. 1 `

w m ñnn , a Ma ry¢ .

wnl ad M wry,

{

.!Jx.uIPn.Jw?: al a al i,. w. r.vA, 4F., J,e ...Dam, drop

{ pn..'.I Ik 1 x h{d . ow. alla,.v A I..

a1 M cwaxanM

an:l Tbn.11a lnnnxl

..alw.F..[á{n..no,. _11,Mb1 a I. ...Ì4,. n,e .,n,l

1,u'0 hmAl Ing w,F 1 4,11c

..l.bN.. rr,1 wx.1pp,. h M IM

Simple Omit 71,,,m i tn I,a uv.! .. 9N of I,.... b.M1 J. I:wJ vwxl k aww, 1: nx *mu,. e.mr.re. F... .:Fa n,.r ,11.d e,r. L.:d1er:::::. w:.r:

i .rd4.Mfiwli, al.: ñ.n. ñl I WTI ,rr di i,..1:, .n.i. tal u .n, tul ì,1

vnAxa: A,m Ilw .u..,q,,.11nd.M J.m u, tnClwam nw: Ilu t:ul ..::I 1..

il ILILLIRLI OR 110E. awl ñ n.,lr'a4.F. li ti.. .vrryiq., Psi. 1. dMeirç tl. 11p,

p,ppz,aïnA =fG.ñi ..W.7 '.c 7.w.l

n{I pwle

nnd .JI p ?. Oe4n 1M n

1 ?5! ' 1r 135 , tbe aLIC. Lit 060 Ivnlblsslwrxl

r11 ,nln4 :M

mq iú. r :,.,.

::or iv .w :.sinn k Jn.,+Anrl Fwa 1r q.v .Jsna.

J. TSe.Jer(,rMn.4n:-ká.n+nk..l Fn Ilvsm xl:ea, n,e nlrna k luievm aad I.:d n v5A1:n

s. TM m :, ,nuFa a! J:e. re.:xl:u

í.A41 wa

tÌ4,A aJ iñ ,,,(t tia n e4 axl

nl::lçq:.l

Tri ,.n,c.o.::,...,,,.r _. ®

0 ELECTRONIC EINTERITAINTERS 1,1011001,

PË ITESTEDfI

CONSTNOCTrOrr +nOISCT

LOW-COST CONVERGENCE

(o GENERATOR

14u,Lue.r a rLrN p,erera. ,inix, r sslrardi. n

vrrrirul and horlcanöd 1' using RTI. 1m:1r.

Br MICHAEL 3. CHING

.n. 031. n> ..i i,.:... 1,11

aI Lii. (CIA ..Ì N.iu v ; _'

is. I. This Is toe tr@re now moon.. or ore otr000rr000to ...mete, ono pox.. daille0 ilnau shot leur Meier leclines: at Irk th. ,14 Uppr

right horlrontal SM. Me vertical dave,. an, lame right. Me Fr se*. Same typical warabllapas era oho Aeon to au arum common.

12

Sim IA cells. voted to oro.e throe voit ...fa ...ea to the o- 001, nnk p... dl.pia.u. `

FJ !n Whitt 1 F t P J t-

I 1

15.7.50

yJ 111A in .r l A l *tonal 4. e rot y o.inn of 11.15ii b..

J..p.. .A R I tolo,. am Into. P if 171n:Y, u¡.Nf .;my.n vl ,.1Fa!M.F:. ..I:b i :Fe !'. . t.i% FI, l' rv 1.: iw:F i r tiu! d. .,bu, 1! .Fm,.r in 1;6. l. I. ,uinYUÌnix.rvlari.. i.

. 11P.ell... he .ptrnaxP .I x..' n e n *d in :In N. deal-4all

!.xrnM-. 5.. ' mw .. PwM ."v..ud,.uc,uFe. YM..A nA,\till

bbd.lsbmn_ .1 x1 bdFnp. i am low lion 140.11tx.B other - -_

'PxA midmr,N IL. mep\i F low :kx .. than O 1.r. :w 11p Pun a,

mM .o al.,.. in Y.' e ff:lA i A" .., lout, bx.,!:.ï w« PaP i,

It.' ml ry, I.id. A p-livr lu:lv

(o..,MliR >t?..nl:Iw:dtt:aP:. iwJrin!eYw,:au.InllOy,nubi.:ll:,

is MIA liml

l thorn bw.4 J. i owLr Cf. With

I t t'0 wo-va4nd :uk.n, Ilü

rif hi 0a +á'.. xbkAF.II.I tow aloe noorin \n1 n .L f.,n ,M lt 3T. 13.,01 Pe: +c:l.

M rv

,\ni,cl n.. :x:ila::, 4 In IM luvna.nl.awy! 15.1 Iln.nphr}

FOI. muFou105 ul0..a*md x:k,ell

paapi b\qln:m d 0011t. TM ctlea rak:a tannins d A;aenta

+nd ..tical .noble .rl'n?xa!m, M' JIN'cxnlWUa.arllud,P,d.w IMluvirvn lu aaable IACY.4 si ti:10 tn rig. 3¡ is

Fn. 2. Moran:al a. vertical on

tyro onion row..

NOI ,.1114 0.30 II, 46144, 4,41 r21 I ILO, i.42A

o C, I 04 r, 4.

Fig. 4. A 540.44 4ssilla4ar dHren by re.. deennin. borizental tine ni lb.

WW1% xem nmgi. *lc OL kA 14.14

Alow!t1 hr teed moge Ow cr. :3444 Itr TI, Vat :goc,?. v.' mar mo

he.o toe 4.0),,..tm

Ya:t mskm o ham Syr E., ol *60 hue

ow+twn

.rv' ii:,:E lo

1e.0. a lea, ,n.w-a a.nt

ee w n _iTg.nn.1, _

a

, ernsanwie 4 5n a, mom. gi

i d eVm!naer vp,Mpmr.m.h.^ l, ue.11iw

,MnWn ,:Niho tom M N d 1M

txa,ar_,hx Nñl ena eemvenenl maall.ue (.boue).

linn ml.:r.l 'nrre.

`am1.1 ,i

' t:M610010101.,.alp,opnlp abwrod.;m Wdm pftr 701-111,111 n

n44 lVo n

rho

wnl IMn ,c ,nm..rlh :fi:MhF mmn6lM

mow ,ud:d,i.r, mot n,.dre:nmd Pur 01,ph,lx: olor wMr vm, w.:. ,M

Mra, : 1

LW, . .ml ,mm1,d nm, plfir n Ñ,"mnlß` d , throe l k

rani, MnnrN i Iñ

1111n1. wow 1,111 a.:rin quo. of ,M k.M-eun,al . 110.. Lxu1 n ww.,1 15.9311 Ille. Ito aa

wow/ vair. :I, (1,4, ,d :I1 xewn licol 411 ,will al.,: . ,n.0

Ild 0011x it Mt aJixNt,Cri,4e::l:e nova nf. P. 1,m ou1 Pm! two, ,4,,,

Mt. V.v10d, 1e,:,M n own d le 6r n: Out mutt, .x:I<

4able d uM.

V+e Iw (JWwine p.an,u,t+ pano,. 1hn14

A: at. S op Inno le ?,nJ.-0 owl. TM, p6u.IKUk, ,11. Ow LN1k lad of Ow con ,p1,A0T'ti6u1.

illfxPlercaM,,.aAwlsl. i. Set 01 fuly. d,

,. ,M m.nnu, ro }rf wht.r o Il.rk lu:4p.eml.

111,m11M..munlrlont

rmhxa nJ.. ,h..,. Mlow n01 M wow

11 olox .aollin ,::1,MIn. an At 1n1 18i. 1e.

le:v.:l.x.mnal .in, ax

,rll+w '',.0 eM mt.. t II

mot ,:p,1.In. la. trim

,.a1,Pl. 44 ,r.,mfi, .;! WW. rhnnr te 9, 10.o,l.cd tMln,l,:.h.IP..

IA TuxinA IM maw w.:th x.,M c0 .,fi.,pn now mt. x

1ó ú. ° m .:o,:nx1h p.0,-x. nxx Iw 0

T

exe1rMV Jr.rcsm4c^rr.fuma. mnnM

Whom dr+.4f1

naMhltt ,M M, h,'ewr

n

aM.pot.. wimh 1n m

n mmoNryrri e9MV;x.mh.w'! Mor pwe

wr.Unw, iM wM. mew, ,

,fin. IniJ U,ne ehr pelmlbw.e awl C45 hnne Apn wf. the tbi., ew Im

eWoi. VLh rlu: n:Nhm, of Je Nunez fNm, kd,.rM,:. aym wa o,xsnml te

,m nv.

SIMPLE SOLID -

STATE CIRCUITS

for the

Experimenter .ASIC APPROACH ENABLES

ANYONE 10 "ROLL HIS

OWN" AMPLIFIER

BY Aim HUFFMAN

.mpY9n. AL r..hew v.::: u N!L.n .n lu.u n1 c u Llt,c.la+l ..'.

!'.The n,a.m.n. "u anlcsu s.u.,1.. u:p.lnw eua'.i dot.

fa.xNlNr N .: ,.E.,IO i.:p. .Ia ,,,

al-ufi4 s I.IvM1p..lprrarv4111:ac xdl x-'II ..-nl.nrnn kWIAA rc'InT

Ç1lTosp'a: .IaI ., y. L. al.n4ul. art, ..nN:n w.IA. u. Awfa:.H x

set

Iwrm.AC H den2n. mb u a1 t.1e u:pa win:l :.veL

cal In..: , Ius mall mrLcsest, Icsmulu Ins,Aeni. .ln tits h+'L.rrr bas to

preamplifier n.l,pnlnYlrre will:r.l

In

n4.

ate FRO,

A iln. sewn w

ieAl.il.. u'wlupÌi .IJ.ry.i-

,.. I:. eivaaaSe

TArmi km, al 005 val. a uullv ,'.:a2c ,,i. '.rl

.nrlJiFia Mae !n:U.n+).rS1.il

p.p;HJiLvJllua nv..nfi

.56IYCwWtK1OR A!Y.Y:

e n

- -

FIN. 2 Coml. banNalar mnrarmnsxs.

nn TnJ 3:`

., I!xl.n.r..nd..,.:n-ll.b+est

Rlg. 3. VIM an Rlmotl wrrmRlRrw

li3or Iml a..1 'SY f. MraH. L.

a.o4oroie aSm.,nwm,m rm. mdl .ulgrl a.w! die 1:..+4,:,

A. the drLe Jsmtl 14

'1 M`in` ,MwkF,h II'.'Io:n, h, 64 rM l0 Ilh h:,i,G,y:16 :J4!x M

IrcAr`.,k+.: 11qrr V, ,pn'+ ,d , llle. ,.I., 11, dette

'm:

h.ik,m e,.Lgmm4m. aw¢ d4 IuR, 11 ,4 I.114 ¡..c:rwdtn whnhd.n

tig..1 + pl mnrnr.lnw alh.: aal aiuäe .µrr

n'

in;. ... m kw,

d 6. Tao Wm, ronlilnrali'na.

IR

NCR

o

ei wrd T - !Al

Ii,,cucWr+l

ÿa9Ed

z+.,,_ i.µ a reJ

nn,n tt

the ionimaa,oiread .n be awl. The ammo v

aT

100

n m.10)

4mA, ,01 ewe, the eM. I mp ryN.ne 0 WO, dun dual nnm.:le u.

41d4eed'#h a tw:mmneaellm enxii. %o

w have lo JM anmhe, >Ce tenl-o !ul. Mertl t. rahe rm A,al imlred.nae :Iti,,6 lDl.

A, Now we can dim, a pd:u:wrl' de. tlp, ;ui: . J,x R,w he .a i, Fig. 3. T bdway qM{a :, :.tal0L eaywuon re

al .x,q,u .I..ur

3

'. d

n.

K,aÌMa41.A:mrrh4u W Mt ovd.11w.

MLe. ,.,. Ü..

,rd rg r:' :61+ ,IdHed is t:F ii f .keeuh'n 600,6

a- and Fig. 46 loi

.: 1, 0., ,. 114.41:('1 mórd.ano The

:14,.m It .4

llLlm nrlmer

. .a

Ln

nddä pe+x.ul u, W i.p.

rnl n,:Fw 3.C.

A9, 1idF

{p,A,,ä d, 0, Il,u,. Al Irn, .

lur .+ use ünl iaW:n,, II M,:Ld 14..hw Ih u,,,e>

a,.Jar.r A: :'. nal:,., dF äJ,a of

n4 . Iml.,n: a bW

JrM ryThlai.Ferä}au xine

:v.411.1I..w .d1: when .Mm i. w(pr pmL'Ya nsprem

a Qrvq1 rm..a N1 rRl I:s. lu M: W a.m..

,v..1geanJ canal, n rnler

...pïJUlWrci. ihr e1r.

Awwt...m m.S.acr.vinn .s I .ds

as is IO.imnu 117 :n 10,000 Am.r

'llrv .a:u :u1 nR. vin;p mrla be el,,. 4i.n Rt um. !n :kh,:r,r:<d_

..7.1.n ¢a wrRr1 :nnren

qpir Fwrr inrin.l..ae. Sine im md

.:( !lee I,..n Ì r: abd u. Sn a

:,Wpepm n.1n.,.qa:ur4+mnrlwrr +.r11 111,0,1 unpreognv J:1F.r

5,1 ̀i,,;

11n.cr:d:fn If ir1:, Ir:: irin.l.un. ia TIRO J..1 :tIU

igr.rcrV3u:.. .:I Iln. :.at r :..U.1:11.0 .

J

d 1 Is n IrY:m I:Na10

fig. 5. Ekierrnin. the

0014 ax CKC¢G >art resalo. relues

R encpne n

ox¢roNEMr]"/ER

ut

!*Mm"Yiae-.c..w

(R mdE le U.nNmvl ': rm Iteifli.nired vdr:pe Rml:n .i yure.

W1 nv 140p0.oprn dm nrT,aarvde

owes.

Aa anal

M (

m* wÌ Ib

value.

l

du I. 1m memnm rrrr .r WxII br

1r

nllad Tln. K.:a:br a

Nu.

r tI. 0,14- top r

nvpanlR ,.d le

.m' de1Wr In Vn1ru

a.11nUlLL Wn.ue1.1414.:.-..:'RJ nm. »nid.. 1.10 1,1, .a. Ai.

ry1

, Inun I

unl I, . IIw i

pau ',1I nnl. Ry wul Rí. I:n lar rzaól nr

Itov wi W.d. u: Rd as.. ' R: ú,1r^n... a.d.. 0100

NAQ.ma., enJmr.lIMO ,.Lan. 71h. $11..

xr r.Aónr a..r iirl e.r ,I, .nnn.:n...

MORONIC EXPERIMENTER,. ....10VOO.

TAo rolnre m:lv'wv d lln 14r umpp14

fin } x,. .: iNlp) ir taJMl ',nth MON vr,Ao, xii:á :..Lm hJr.irM.II

e *Jwa e f.d n m rigid n: mrJl nip* nn'eJ.uw. mnirS w.x rna VW *xis the vmrir:w.h **ILI low m M.+Ajn:nl qVprpiaMe.

11'.rJra pMMJ.lá M pin

h,tunLW Ann II* amplih me*, rergihrnri k: Aspiu whm» h,r IM ,«nry,nm,a:IMrlár.JJR: mnl:.^.rn rM m:+rám,o a,a.vhJ aA '

á. 1_a41.ì4r wAl xAc '. mgWA1_ul

n4llr. +.Jnr, a La,Fr .q'u'ai.,'rn r,J nm.r Ilm rrrpoam aq., {,r¢nnk rnvt á umári:a:da.

Ife'n..mrAm U n xmc,m':1 u^Ilq: m.rJ,n m mnl :1 v'll M

:4x ur 3F. A';u:lrx CS ari r IVm

r2r41rindi¡J.,rn NMluvn.x .aalw`ngir'i.Ir

Imr rM . '

e Arm *to fl. nx.ArA,.Aww,r: A:yt

Fg. 1114 in Pita! circuit Wont.

7. .ai4anl 14e I. 1.11,m 4vY.re.. r.luac An'p dig

nn .ám.:.f I.er nrrime c ni,inylu

Fnr ynl rm dr 75111 c Ira",

Ihr *Ann* nçrru ;:nlrne rii*. gli-r:r.rinn r:rlr:nlr +ghn II MVO,

ss M

,u

r.mslrianx.iq,vn:e . ri'I aa mi l'n, xi.:M WY*** Ç.ri.nml

vcé..,':n.lavmi,riivar.d;. ,im,.

1175 Wi

( =Y J (p

SON= %!

FI¢. 9. ***ring inpuLioutpul Impdarmrc

yogi wiÌl Aa*r' la :il iFJn! *Fr 1.***, wgr*

+ehm wm,lA ryur, r:dJ Il,m. i *

,. in** J'

Tlra u IIe nd vd power ***IL n. i

ú :stingr *isle In

;mmm:, +Jmnh+r

mn

F.(ua.4lyti ñier aITMi:,JZ, ̀ r+l.r

:rr:dlm J nÌ': .FJrT ralrrc

?n'1,.F , rxmv iy h ry.

n l ra-

AM11Jr.I .77 h ore

a.0. ¡xArf"m,i,rymivÿi r

tlr,n.prn .rvin.4:run gi rrca*ml in Jr a* is MiJ Wr. TT.

rm M'ra4p;Ilm.i:am:l

al

firFrw M'rM V++ü:Ln,.ñ-wlMrn ra.imrx,n.':nlx,n úfwMlw.+A

Mnúniknl.Alt )hrv on qra rlRr: Ilm u. 11** arc MlirlMw'r *al

rr'Jdg l'mn.4n, ryA:rx uu 4J.+ryrrmrplme.Lck: J:ni in. aey ; r,. Jml .en:l aá =rrF

P.iLer.._.nM'.i.+....ic. ®

11

Switching Logic quiz

Z.7.7

ir(

A A

, ,5_,,' 1 e ejV 0«

C

--e---e--e--- ,51,---r._.

I F

--e- ... :t.2 =.

-Er",.._t.

FIFORONIC ECIIMMINTR'S .14100

What

thMakes e TRANSISTOR

Tick ? UNDERSTAND TRANSISTORS WITHOUT MUH

..\NLNt4n:lln

i:.ä. .. ;,.,. iu m .n .

tarn-tarn. -

...tamer .".. ml atm. mella

c y:tanlinvraI!raun4v +aln N1 4 v:

in.L I ^past , ÌpM

Wat WO., mw :<Nuen :

riuÌ M W44auIx :kai,ra n II. A,fn Rn. ra! m..Nn:mkn` 4vr'ua narc,

u<kx nrp4 n rv +p4, .i,p Nn Anton: Alma raw,. ó MIM1r u.kn:.anliep.N asar_

e Jnw. ru M WuJr.M Ima ., lu mallaaalp+N üeaM1:n.1-, JnYaaryl>Ati lu IM:"ClotiK?ap4,.

MM1.m x 5n1uka nva N: a[ S

--n44.I4 ^ ,nluPllnl rtIn .J m Ja. nMeM1 n NMrv.Ì aal

BY HOBERT O. WOOD

N,

.uWuauuM r4elrv:n .,. u i.

;ryulMa'rHinÇ 4 di4J tLn, aa I.Innivppuu+r.

aa:lNi. ::3.a. p.n

mxl briae u J, .

uwn+M1 ea'n:;.,L,-It raA

r `MVaY LTnwn4ua:L:p+: niia af:tiron N :n row fin

a x` :i.''r.'o:`:n': own].

Á

a, .

t cM1x L Ihn J:.nIrbnti

Ils

finr,,.á'nl Hmor rh na Naar rorrw n:r,wonnnna,. To understand wbr a atnkudnelom Jam

mppweeorr

l ql

:M .:r

M v M i:inuu i^. r .{

'

Ir lnl

ro .

E.xR.ympat awn lu. udw w..d.nwv A.

C TNx lmmu: F 4n..de'mmweì. ro IM n..ken :d J:e .nun amt mùer mka- rinl :afoot., F nblFaR k

n:du+x W vr :l i ,a:Tn;l . nn. the

wAroaanq, ontion tor oeR m.l I .{u,v: mil., , Anton

n Imo u t{n:Wa. 114 F ina eme ...mu .r d:ryall

.Ir -u, \IIM1I ú nW:lnk:l

1 1 toe alruwmr eL elnnLnr, -Arn. aee u r W !Lon ,:n.IMv

r ñ i äryrm Sw1 na M !x woo mdah: xT Iw ot

l.Haxi ewu r.:r d..k .:

rthe 1 G

wn

wbmmJom Ih, nest >L I :mA +e

M1

.M tit r:nr

t:mrrpre+:: M I

IM-r mar .d:<+nmx in the kt+nm >:r wvn 1 brow. n prcbNe tMrpo L..men a 'F:k.` TM annl'1nA::' m,mt.r Inm

the lael the them tool, the atom into wArAxd

raIL -mn.linnvnMMr. it w

.Mi.pnry(.MAxcm the pr -im v

n

dp{ corer tor., that InIIMm¿Im

in rcnF.Iq

.ym,r InMMm ^e.eln

fM1e simplent dicier thorn, thr

r...113'e.i :4.;w X11.!3w43MF i

:: m J papo u.+i., When Ibo hio

P, e

n

N

o

`JjJt

.aNJf.n::'la+iul:L:lu

lem It

iaR:lYo gaYmri::n I.;yb'oai+1

P N

o

a. whale u..:inlv pl

VV::u

.x+eeW+'

\..eln.:~.loth it pea .AIi

te. nmutv:l -

JAin J:.mirrrr! ...ml.e+u+rr xdo

v

nb.

ii:x teak {M anon. i home: a.

p::r:martial I:kea+a,.l.,n,.ea:s. . I.JIO33 mr7a{, IM r'ntmm. u.:l a

toward eMI.ma x1:it.x:.r.ma;ArlN. m:l..,tomselnrN.o wai Mt.:+..m.+:rn

IMMIROMIC .1.6C01,

retinlbrosto.no. to t ol 114 mite, oett

O., WO. itt mippotintt 44.41 CA.

WW1 the bete, 4entetteri to tbab ns ch., the amtettudvetor 1.4.1 tabu.. 1 tl.entottion. 444I!44 fr4 replotettoon and drift toward .9 buAlA4 pm.. took. up the 4.4.41 Tbc

" oneollonetl totelbe Woo

peteut mob.. It tbe tha WI on. tbt .44.1 tbnottgb the

044 eemioneeehte ehyleAJ lh Leon* ...T.,

ITAAng the Feweelloope. not atom At Covicovelt l'lph.ftSIk1l45I .

tnenrrl Ihetl.,utn1sa5 I. wv.

17ru=%. 9)

uov.r..,.. a b., The no, Isistunss sum Il II, marg., in 11911 1141499 91*

10)91 NIL .4 AA on Che notO 411 foor onto.. ttertool tc4i. on. men. v.,. selte. i: mu as the Ce. stort too the snrsicOvins. Ottly the PILO...MIN if.' MON, i144 ...My the eletommIntb000ni.

too.. The vars., ',saw pas. suslones . lar maws , ovoly

ess, to saw noossrsl. IA. no

/Ls sernievrodowoors vispeas soss,v,

Wilk Ws mus.sosa 41, eIrn m be 444444 the bob,

4. As. otonts At, to rig..1. Ole Met ...411.4 ..potior poo

"-:;:r"1"1",`,!""m "'

' seas. os, rs. pvvolitss ¡sr: o t vat,s,

t's-cot'Vrtr:=Z to, I, is Ifis tbetlbac II an AA. 991,1 19)9149 4919 applied In .14 444941,

19144,'144l14!l>*491'40404911119

In o ,014.111 orsd,1,.. belt ol thr. s'scle is IRA, ,v1eIrayoll.ssimarvi

otorle 491I e41499 111 tb. s. it% 114 b44..1.1. Ole

,14 o tembuotholto 49411

OA Lim slre rem, env., .vorrisr 14sw

ra!,;;:tolft; iv.i.1,0,1 owl, ill ,ssr caa Isv

A A/ The transistor evas Isr sis,s1 1914

tigers mrs'orsT,.) 'Aali 111.0c 11:111,avvl uppre WI, b ow.

- - A ',IAA ti telylte aLd a M., MOM) ,!11,11.1.14, de.111, 11, lAtt, b. In I, Awe.

bleek Alwoe.11o mob '91.444 11)81,, tn er000 on& op ....Ad.

litar we 4. bet; 0.91 ton.ol touthe...1 Irshwn Iwo :bob. ot

.4. /unction iv 010.1 in reverse SA s. os, is a pry, wall

- (4)

Po, n.. s. f Arof maInpls Or.inc trans..

of inn, matlial tepannea a blonk of inn, inatmtal drIonnoin syni. indf cath I.p ma flanua ai de hon. of S and in do soloomiir ommiolinn I anon. m.o... Av. retiAT.o. ban,. 1 aw, Infin 1Iaa

in Ale 1,1% Oannow. Th. I. ill derne.m b komia

m while de onto. Iwo Mod, on mnider and In de piadical

osoini. doff. A mi4 anima don.., do odd. 4 .4,1,. lineln. Tho n Sane

oid Ai Om anneifying fr.

nnoll Inamd di.. of ra,

rm. LA. la app. Om Inn don ol fkanc, m.re Aid ca..

arn ni moo.. dd. fan. and. vainiam from de fan.. latkl &L..* Sr.. no de ham .6,

dn. in mini diat Ilo no.* fa a nam

m eon. id pa., thmigh base midor

foe loll.... baso mire, Inul,31$ Ile rem.. ,e.avnin ¡mat.; ia

by Om va. of na aal 11.1,Ad ak

Fur it'd...v./tn., bir

fr oni don difoopli 1.11,anoinar e.

Pow of nub.. nation fn. dm rmionf If uula

itfar'72.7.

ZinZlibn"ain'Pht:Z7.b.V7p:47Z

kw teach Il., odlen. I lend aim. AU of Unman. buin Ihn emitter 11.. droue, inn nand.. ookr of banded% al

xhila d m4n41.1

p.m.. flab amplifionsonl The amino ni nordO donagli

netedor wobbled de .1.-diee to whinb t. bon is Am. DI iota lust. drive ...NIA do poleubil sup.

do I.... RA. If no an ...km of Rt. mat do foltagn af 80 .aal .4414an a ,itialok,ollat, ii,at.fg- aal do II. ne ran end., din

7artrinTiZillaTrtn=';f'd Ill

on.. nimul fionn do. nani of a 4, lb, oionni

Ilimuld I.. lamoidor .1 RE

d 'Add dop find anino de boo... ff. railnin

o signal it if Anin. far AL 11. eittuA au did a

Aug, drop dodo,. X.Tas

ELECTRONIC UPERBanirEn ilawmpoN

U Practical Expanded scale li'illiohmmeter

MMASNRING THE. ALMOST VNMF.ASIIRABLE

rnia ease in,truawnt was Cr\En'Tnlll. M1nw + F.{rl.r pl' nrJ.:

i,...:n..s.r:.v.4.vil n

te ssssss ere Minor-

.po, yea. In 1110. aninera.o

vision is nnide In the instrument for 1.0 "(nag. a. battery protection.

Win FL CORBIN

MUM otv.

.011 11,, hmo 11,,vao,lt the riplo,i1 r

asvio,l05 elm mt.. reintvr rownl ,

114 .lor . rrltue, gi K..roo t. ',ova i 1111 1,11i,,

nAniailmo A. ay. .41

40.11111 ,1141,1111111111117 1,11,111101111

k . Ai,elle Iro,nt poi,or

11,r awl /I: with Theory el 8:84:1 4442P J, 44-.4 ,Itxr irn

111 44 AI .1111114415 -,1,111111.4' hel4, II

I 117 at.. IV I. 1...11 h4.J 111,1111011111

wal. (24,

CaltbutliOn. inho ..r nu It

10(.7..iir 1,1 /1111.,1111[11'5 11,1OB.

,., .:.

FAST - EASY with DATAK's

SOLDER ABILITY

Yl'.w.M17,

ilk.,tt.J. TI

row W I!w Ix.Jp' : r2i :J.1 A4.! 6aJ ñ.:. IIwF yw.ß: a

ixIFI

..,A. k,:.wmwe'"lwi." .wn k WwJ..A ; nAJ nw F.I. IW r.wi.r wAl iWwiM

.J:J. I.AI: kad.-.w.I .1..: :a14r.I-~rwJ' iü IIw:.44a ny

a,

Hem To

.I, IM..Ik I tUllLAT. Irt.

pinrF w I

Iw.LNw,I I.IÎ. i.::I:ia: ltowJl

+

,<h:o-:J..

yy "` a..If.:I

uSn .k. ..An... .Iaw

Ja:..wv

INSTRUMENT SENSITIVITY BOOSTER

De IENU THE FANGE OF YOUR SCOPE OH ATOM

rn

exy

w.,, mm

a xmyLó. It

.rylw. ,ù

BY 1.1. BOIKROPX0

o-r..d.: ¡. Mi

nn.I:.xA:, i'xxn...'. ár- é.aNl.wi d%u.;:ñ:iTmn.,.n MIx. nTMµl.

bIx. wA,^' dMÌ\T'4::1,,,,4.,

M .x:..:iAxcrn ota (t e,aauwwds.

Cexsl.utllen. 11 rt WTI

,,4.xxIl:, Mlmx I lx wJ.

l :d ;dn pr,

§ m q. e m \

- a m,

a (:: \k

WI ' -- - ri ,

a \ .-

°

A a En Aii Nt_JJ

, ` ce;; !:

....

64 ! 9%

\^ - _

a.1, 1 biaLvana laaa. Alaa uo, rtat Am,. liar paw: tip:: aka, hate. 114 awl Alf Ai: mutual

II. :tap of Or Maid. TIL,P L:Lit he avamail rbarvaniniii. aide d oat !, nollsrr nralainaral

IY=1. Krugirx. atriliat,. :I itaialatra

plaka

Vti.iatat 4 b ttrr.;, 7=`!,i1: wai.t

c. 16, irpor a, a ail, Gr ila: Nor, ,ral avit sic,lio

ilta aria', Wawa action Or aarrav wawa, ihe :ma Lads .taJ ala, I" :Lava :ha alatiaia Irma, Mar a atai iniaaati airip fan, mil arnar I "t th IntS,,bar nia. Willi far laimatfa 1,. Oa, ia their alp, plan CI :11 pasiitoa no alp of ilia harm, awl iaiLlai woe taila aa

oaararatna .'Bflt :4 t in arval, iirmatal vitip iv, am:

tlai , 1,1 ,a1 Lt. Oa: atai to

Of. nr .M1, cal al A/ 'Li vaanrelad. lintayM1 itar ti. t.tk. aLar lama, of Lia: lutani

p . f

we. de balkA ebil :ar. ara.sel. ror F., I. TEA, rabbi: 1. IC bard ;a- II,

wan; a al, Maw Anil tral paarl A a, ...Am, rlaran 1..11 .1111, pl.,

la. IV abd sa,sI acl k 1' barn rarbralaar rarely 7., II; t). sure ganeralral ban.w alip to. point T wing nis Io In.. 9..a1kgn oval CMS rralornbal arbor.ra, 11.1.to bra brerb,raay Abbrargh ?IS erborra rrrne Inr aIrnar rprralernrniaara :A rri.

LICIPCO C

A21. wJ x=-Á IMr re. Le rtl il Jiva

+ I.xdnm

v JXti.-I lFr Mmlgcl< F Ix . Ql a

Ilu.Ir,:Mxx4r l'IT ha< e..wiF- rMe.lunn

01.10 uu¡nilnd Im boa yr...0 n .d Ifn:

Op.nlla, Sion, rnM ul uv

i:11u:1

iv luH Ilou : uùa: El, IF.e xu.:m i1..nwllo TF.{elvµ::

.indit Inu+N,u alll.., x,ml

.:r

F v r

w

6

. omotor

1n; axe pá l : b, w...At, Ir v1e.u:ai<

exu rho Me

to

: óáHF ° e J,

s:x Ib A. !90 uc'oats u let., IM IM<p sr I. ad 01,11 J lyr d elwirrrxe b1iiin Hnx TM ew <r, 10.1:1744.1. z <til ir . ax wx.uui:uxed proo.pliror and JuMd Iw uroA x:nr u nSrF-y.+.+.......,... EqM:yrvF:np.uwe.mlh, nub+d b r:... Jxxl

, w.:d ;:%%:.n.' 1rr..p

Je' pyrvl m Ih p u.iAJ': fl

+iair t.rud Iw.e.Urmb[ w mn ..dü r4 v, ne:w:rEna. m+ >. uw Ir lu.a

TEOxxIOAE SPEGIfIGFTIOxS

triS u .e'rWÿr:..

Build a RECHARGEABLE FLASHLIGHT CONVERT YOUR BATTERY-EATING FLASHLIGHT.

TO A MODERN RECHARGEABLE in !OHM NcNARR¢a

N`Aw' Ieal .w Al. I I.FSM. mrhvlp- :ell. e.. L. !omrcl Ir appll1F

:k :dal.-rm.w,. a,nYe+ t1.3 .,. yya's. ti: en4r). why . ak .Inda¢e d-1m. 1: Iln: 4 i:uló i3 k..:a.R aMlrrNill.xN'eu:exavlslal.pxl nnrv:n!Ih 12.MIrWrl.'.l.y3dyl?a'fpin

x, uI l-4rcua"r.a

v

I.TIdl.c¢In.Idrv5.:n:m

table mi uu<.3 +xL.yWUrym

lm c rtWimc .

\nn }nn..:k, .1.er n. :l xdI¢ma* RI.'fl. ruura cm M

1uflmrn}adelu.ek.dwfr. L:...:'.:ndllp.:h::n>:JI.F.r:MS: Ade , rv ;;n:I1: :,r o diet. u+. iM* 3udd 111 au Ad 1- h. 4.. w 3mrçne¢, Lc.I !.l ':1 .1

r, 'kJ N. In h:1 mvuw nl.SSI'nk n'W 3LM.Iwlal -rMtl" hu tael.i alrYivl ewe. Mnm1e3drldIKMN.x.nn. Íw+. d 1s1

n/1. tf...hm:m TI .d rmiN + .h IeII Ils 4 oadid

d.Mn II i ul lwnüa .. as mum N Om eni li ndu is xp1p'`ed mTv.tnnhe :ircwl. . AAA. A raged'u Y! .+Ma dru sm- tr.«nPe.hk.kaR1111u1.dI.NM4 n.Irc 1.Ilurg:n¢..Im* al` ñreñ marM :.Ih . u.mùed Lv low eMr¢e m.x do.alEl :s <r:k AMA SP

Rls.inrl.l.W.\.leu:t:n '.s:wl lid aMr¢nel.uu... fex .lavo§.. L.. M:nxpm. wPP!y nMn ian l. 1a!ul-

'lMgvindkdaup.Wpana.M.IM :.31mn.12-vl+.au¢irnìnxlwa

ii aa nf R! p.0 M n.r : Ide n. p'n eamw. , InlRu¢%+z Lú&klued¢h. door M

úd vase úa lud Moulted lrlx.mmry*. ueeu Ib eirnA Is

hudtìa.dn. Ire . pp leIMDad. Lrtlw.: al. aesrwm. TIA Alms* Ada

.u.sd Ihr «II rllin¢, A Mm Ilkl'r.I:w InIA'a rc3 Ilse +1-M :r Pre 6 :.A1+:ul

r.I. chodcg. ds l= AN Apply '

a¡q.'ivl .n 11111.1A0 Tl. In IIh IL. l mood ni k+m.mmmad Ix.a-1 III.M .: eIk w Ad .1 .dI ia ¡:r..* V,.,., d52' SI,ll,hRJ,sl,l Is'S 5*)' Son d:1.. dr ellar¢Mw

Tyre am two apprioarhea IMI eau I. tnMs m r.umuKn (A. is Ia t:a1d d rrm

wddiy;c io a mull n::hxd sln.ws h n R:uAI:M IAA ¿lam::.l .UK:1

AA UM 11 Ad 11 ú.a'I.I a:12 .4udie d r .ide el Ils.u.:dour.

The s.mdarrymehir dl lue m sryjenshl:¢l* w.R.x

1IM Isdd,rl.nsrc4lrLn:Ihiì.I

.eW iAAA a the R rcH nmmul!v Iw31 a.d Aeri :M 1...

11 Ie.,SUd: I. IM

Mls hr sIekrlyl. Mn4 .<eu Ad Qr.. ¡ave LAM re nmr s. aw.in.l plug on I.

úa:kJ in only .r 0.1,0111 ni:41

42 má..

./+J4 -. + . Build am

ALPHA

VIM 3 BRAVAIN

WE FEEDBACK MONITOR

You may be able to

learn houl to relax through electronics a. WIC., w0.1,<

T 'IEuE -. ,. Prop,. vÌ:. lo.,xe o i:a:a. a:ri.

efne

¿ LI k I m J4ÌrJ '1 Í i Nk ' C 1 { lea.+,. Jw i w u-. dr . .. ThheNI. Ilruk a.47x..nw Ín :.. Ix..l.m fim,,:uvulf:r, :maul I,J..:.

Fr,Ì..p. 4. Mot . .w.xl ft. how pm.onJ. ,lnu:,á.:tm :n:nJ n! J,a:acli:,y ..w n. un:.xl v.x IlrcIvnircl.or:

r^' arc :, w..dre Jtt41Jv alp la

to ^AI. I.

b dim are :vu Im :npuw

L. Il:e u.J aj,:,.. L.JI.x4. I'J:4. Ilw JJvr fwn,e d um.Ìla...

Aplutu r

I.up mk Japans .r.11w u isaskMM.d.I,dPlue',Ì.L..I

.ti, xu Qvu Im... ns law wnnl,)man. heel J.. doled am

a

Inq. m. loud Ix. uIl ei a} u Mo s. Ip, mwtirv.wJ. ww n v!wu .. Tim

mJUUnaa.s.ofleeppaaa,:2ti µ,lu:, I.. a lw ...odd Aplu, ìI.J elm-ole Ju.Ia..' ni: auwryn doh. Il:el...li,.ul loop lrvink..alvthe

.:IPl,a+i,1 P.eb.4.a, :d dec..

ded R:J

pJ o II ateli..<,

u u,

a

aJ loll of a lohe l v i:, WAIN, ,wtI al tome

i. Tla q ia.a,a vpeJ,

m A,.. J v..

p ¡ux tm vuav :Sw19.Na uddum µ,eo >, l vow MA old. u

al. . ipú Ì' ..

I eir ::.J.-.nek:m.FUr.+ams.:Iml, `

'-f Hz: wM^M.-,n

'y /Y bxdM.,Sn\mrJSw I:`: ',kNw ,Irás n.Mlbl In.

Ìlrr TF,w I. y:r M1'4a

,.,.)trr OF In1µ, +,.,,JIJww

riwie air w F1. wan

,:fk 1»Ak,.la.l Imo loam. na how

re uavreeñ61,1.1ua meo J all'w -+vl:.+-'bthe m.4.

m:l n Ito Ake t. nfhn:.a II A-r 1r.ìn-...a JA.c In a ñ4

uM1,1,::Mxlá.k:Ì. inuA;.4 eM. anJ Iw.7 edit

About Ike Grcwl. . Ilu In'p Lr.ly A k.

., Lry-wln:4.,ui'aMhrk nan

.dn'vr ^:JIIw4rJ1 mna II; ro

alb .Aa::I:. 1ma: áJr ikl, ka:w

e .aJrn. nnM,' I,14há q,r.u,nenl ux

t],.Iroda. +ahiA. <w:lle sT:wb to 1F anldiFf. nr +.-r.nl in :x.0 n.p :s. Ploy d.a:4! ,M ,,Mr.an Win ...pro ri ' trim) l a.

.J , m i ,;eÿ

:1.1,4wá+. rite Ydi'I.o ]M1 Il,a.a inelre r,i4F

.iltra.-.rya "1»a

AÌ .Ì

YIxrc

n :a á n

d 11n+

aV111 , N,,v

:

WM: - h

n

IJda

l v. InuF N

1

Ine.In w4 2r:1a .,..Ih ^l*^Mrnmm

:x.J,!e I.kr+11 »+. nñf Coo .. +- I

+.rr

I.\+1.^.l1 e

.1 Nn

k,vuxa

4 +Y ti.l h.,,. ,+.

fiA

Ie the +lr

Fnu. mood roil

.ryw4,a N,I.r- n.11. F\I. .,»w. nnlmleinrvn....:¡nb. .AIMI.+.

nlwl

IFnnIl.r.nx.ne.emn.r.bx,n. nla ni.

a; ..A II,.I :¡rAnil 4..TI.ai r

rw

'w.b rlrr h -.a+J I ..i I..:

'flrn..x K an .' ra.:lx ..1a oil! hr. r ..a... ,+.>n d,. laa Iba Iau

dm<Mx . ïnA1(.4.x1 Ono mér Ad, ..álri.w e-.nÁ:u0bHS4u:,

, iv, i.m.l lw.

leo ki II

..ä.,m, h

r , ,;io;ia ir I!. mimeo

l n1h In ,Iw

111'v ln

L'IwM nvr.fn:r Ir ,. rw .al m,y..J.,aiti<

rh nJ ua+Nmn-arm , Ned In,iad m

rl.,`r . :.:á1nAi:wn:n,emnma MM1lbml.d:l n..,A 1191. a,a n

r 1

1 an Ir mole dm wl w.

T,nMbm.M1;mm son, 3(3 M^».x ttlw:i a v<hn°d i Oral

ok own wd^:,p n d

oil i nl :F< lone io ,xwrnlvra,l ,

Im Ilx ay Ii Ts

Ii.:le lnrbiofeedark. F1rg aFxe «v

72

.° o °°vlóf Irg.:.

result w. ,VI

wilit y. f

I ru ..Ju JJ W- raL' n raw.. wart4 :J INn

I- -uw

1

k l

J l nl i

k1 rU

le! I M I r f Ral. Il._ urnOily f1. AF.:mnIJ dpi,l I.ixe.a ,CJ Ix.-pA

RL'FMXY ?l9:N° .... °.r.>. uo

=Mm, _R .,1rn=

ILkvl 11 e INe a:, Ir.+.

R',n niSit

i.6 ix da Acts u.1 kv < s n 6k,

to et. FETn, v uwd

IrA

II.,r w: IM n «nrd..i. w I. , f,.ñ.,,,

Ort 'I:«, I

1,7 ,1NW, , +I A fÁ RI1.

.eAl. Y+

r+..:AQu4 .<r

Ogg Ìm. 01 I A' , (

4s r.g

+<f r.M. u, rwlolul.

Trvaddu (f_ 1 ,m Id,vr MJnF

g.:lav . Fu: .AMrII Lwd i, drünA .: r t..,rue Iltf` 4,awd

'

VI Fr! . e Fdlmre utirM1 , e ñ.F,w.,pvW..ÿrw,d.M \JI

I:`ñia°v ,: : , d.i i3.11

dor ,n.1 AI Ie..ow ,.. did. n+rdl:diU. gill. 53

GenRrlation. Tie n... ,J r X: I g urd (foil pulltan Mug, , a. Fig. 2) niake..xn

aAd

II

.., .e

uin4« ,v.'. 6I Ile, a,ul IAr ne:d tel xT: i:: -«JTry*

Ten1Y1.. I,.,JI r.d, !

,a1.:4,., n:°, «a;la .md inni mw:l , g Áeord ., d,.

ry:n.r-. 4A ll..l.n,4u.xdrl, ¡t) I

Cuc g a i1M1? n II.. dull

m :.

IM n.nU ,mml iv1 din nu9.r.nn,

<

i I.iv,xa(r mvua aq, l',e drmul knl n,

Ner-r:d. .,JN.a.11I. .. r'.unF.i:,

Thr

.

dmS'l" .n,4'ma IeaAvl

n«I.'rM i:a,« .:r.nd Judi nrTn+di:In Ii+,r.gcatr. t4m JTLaav'<

,s ?nigh ., nn, l'. M . p.e, run drvm. If you

Ma- e In1.x. .:.:k 14r ,.^g l'rorFa, dd .ud >x-d

be Edit, wNzd by .Fp¡tng L I,M a,.I IF. gouM «Al to

gn vid ù y I gntth.l

+. ha,. .AI n a.d.

'II. de arp::l .d nll rp :wipe dn:u!d Ic ip M

m

iz

:n, t !'ul x, an . 04,

e:J

lM1e Iunpliln. l'a.,A::uu'n e íl Idr.art'.v l nl em,:.e. Pele mI.Ì

I:. Pam I.b 0.J d w-e ,.A N nl.l Ilan Inr a 4rh Ylml+ In:: Il:r p:. IwNAX.mnW.uapWltrinmla.bA!:2:.un

Ilx fille Nat .:a. uíllie r.I.,Nm a.nPN:t

+ 2r . ll'h" %w, J ...Aew ::Ijnm.. N..

1 Ir2 uv

J If 1 1fJL N I Ì.e h, I

1

., MAI :XI .A.e .:Npv N lf:l ..31 AO WO tr .Ix w:a:lnl .çn.d. II

.xyma:,:t.i çe.,ul::e. ILmyll ea. l:..dp44'n

r<n A

aM l la::ll Iruail .rWlIWIWr:Imrm

LN+. rl tar rwJewa,noble ba

Or WOW, Yu

.lrn x whralv. n+1 tida ñ:u f.v+-. J..6 i1N, :a:x

<1w ll_ n W u. p..u:.ln. dnl. u Ilw nptx JMIt'Iwt.l:+enrr.s+J+:y. xrH Incawt :l. w.uru. "

1 uapn.+nl

túWP:n.lMm ur M ..m Fals+d ~.+

a Llselar. IIp11 q'MI

r I Jnivl ur road Ia1LWn iPalarrv

Iu J.

F., ale «ix IM l:nna 4 M.LI.S ,p 11N: 11 uprreN1 I..J..'v.H.mn.xlrwk .a t

'dr.f.Jlr i Tiler i ma] III d

It xtr tee.

Mn a< :np 331. aloe!.

+IIAI m»Iewp nl ir,4: ci NI Jo:L IueA ,rovvi de.. !tool. a ga.l w IA+I i- , N. e.e!mr: and at il, wkwl 1 r u ' I. 15

11 .11411 U.Mil 'r m FlI , m.:J nlrwx .{ a' nlan-o! dal Ide n:.Jr ik w abat. Ila lef. ur rN14

..I. Swami Ilr

etl frn:rlm i.al ul.e:l :M M1w:.L+, wII..JI.xP!IA+.n.:..I I..F:eg II. wl. <,'i11 rk' pineN :r IA6 rurl,r..vu should M prLl:

ml+ i.l nPM n:Fl.l ápl,: rR n%w.<e ,>k« nt <e

Jldar .nlr'iou '.r LteM.J ama< I Ilw n-rn, lml ïr t.tpeN-

r1 Ika Le plu-..p!aen Irab::x ILr L is.:J

%P or lie Mnm + pLn...r:nnli ,r.L,iliacliwn.,J

a:nl Iu

` 1nlaIMM1.AaiÍ Jxr a1: Om Lw: M ea.

nra..tlLtllwa:liu 1., ',pat al .1 via, Ilul

Iv.iph. i0n.:,::re.m-a..::uePm. Juaint

Nm+lul:1ete: nma:d to Nm,

r.ae an:1 ^.anx+.r.rcaxr<IW

Inila a ut F xW:d dP:t

vitSY:l. e Ìn

Itp,al:-ry...<1n vl+i.L y,e fi

.eam! inue Ada Iwrl .o-k vu

Ill

:rL I Itudl. ra¡J.r .I..N la:ú:. Lin

,x.wls re at laaw. I- a nill. iaocnw.. I.-p. n., IlJn,t:a< ar!

1.Ne crem

BY FRANK 11, TOOKER

Special Tools for the

Electronics Workbench What tools you need. where

to get them. and how

they are used

.." "7.271 "It, 7,11:r

N.-,I..., ui IG. u rrva E tl e

N, I:a. ,ucF . R..,

4 IuÌn Ilu

. u,J

Ilal JnEi v rrw : nel rl. Ip' 11il.l .J ll x euli rnF,l wrye:

.:r4 i dn. Fl : Inn. mop 1:..:4

I.A:II:uul. Idie

:.R.p Iln 4vr:k

nM Á

v

.0.111. when

tat u:nare rntl epol, m:n:mel forre. Ini.:

waFvxF::u IS ,.:.r .. I..I .:.I. le:ll.. a;:F:

,rl !Mon . lvry:r R,:n [ 1k raawJ JrrPFrz

4. II+ rrnn. u

P. J Iw :win :rwM w Ynr mFrl. . .-:9.rFi:Plµ. nml: .

!in .F:.n rl rNl l<r . .11Z M I:I.rrnl Ton xÌni. ú r.yr_nl .F{n,+MP ,wi xi,J!nnHnP ,F,r. pt.. don , i.ulwalC:!,unll:.{ar....l:Ft ln o-e!I inn

....b. kCM E t II C4.4Ï 4.iFvx ....b. YA I

I. ICU r ItlrD. ,+wl.á NÌJ{n:.ILua no. .41 I:x,. TL.rv.nt

:iu..l..I:!.dit::F.

M1P

" H-Vy apm`rJl:. Il I:.YdYa In w w

(:n nrlM 1'I11nll . nç MH.IrR...InpY.

nni.,:: i°

SyooiHtseJ Toots. Mown nFM \n a W,In,JUIx Ad vd In

:. - d ton In . Ik<

.:slÌn a n . .Ji unke

m= . s:1

\iìÁ N.0 Ins!. 4 :

.ñ 'vl Im

'+Ilv+l Ja::nF R .ylkr ,

r,rv Sa

W TM Wc .: k::r 5551i.n '.dler

Rm1rkrc

:1777rr : Nu

fI

iv, na:lvn I.lan

Ì..4

It v,:l. :F.n

MO. arlA.A. 5'k 71.5

.:

awts ç - Ow nni i°: m< toi

i r..::.

Weoas, ann 55:55 xnne eml.

1

DIAMETERS OF FINE ORRIS

0611 Size 0 -1

52 PM 63

C íA.MF 61 65

67 6.031

66 0.333

7. FO

OÁ20

OO7O5

Ì8

ám1 %S

v'Ii.. 0,: , :rvb*

ùSk:F ,4:;r 751.5575

.ar aa.lk,ui raMl:~i\r :..::p

n,..l.:n.'',n,.:L,

iF

ry.5óiv a I{nik 41`I

:.p:rara:n ::f l' .n 1"n:x. Ì.,f r:A .JAn 'n:.lr IJ

a::1na75 kinks tool Mar :..1, A:.K In71.r.,,:.<

-JaNF <HAln.a, .\:., \\'::rk7. I: `.n.1

11a Lm'c a.r! 1..a 5 IAA

á.5155n.'.

eX1116. 1.411(

aItr F. abwe e rox ol llrem Imae a nrenaaturrya

á

TIb r:l ..aldr.Mu

ibrxla u aa1. .: rl:.

lor en,ndag r :.wenlN ricrr II r:aW N" me I

iI rrrir i. l:4 IAiurnu.:. k.. bon

' g a.rx4.SRb ova .Lel wmT4 knv .-.v.! iz d .i.,l¡.nlwr

galual. .r Iln rbrr:earb. IeJJn.r:l .

r4.: IdGF iaul n az.dÌ `Iw n.paa N

Namn innrrdbb.p Wk. .b. :Ina Co FILI. d the 11.1

alb awl10n1 with M toa. r NF .b.r 11. tvarr rml dl . .

rr

r.ry. .

r n- :rA plod

Tho bukoil

lm .nt, a

ta Lrrr{laa n im .Mer tka. the

Lc0 m Mmn :wdaa4.dil;nW pai6uLLywLv m rhxrw ocl. 'IM hnv ilono rb krt cod of iLc

arc nbxlu II'mn ImM1rLv W

z+srIlaur4í%nr FMk .ind . urrd

inru:M1 yrO:Ibs. Th:tir duMmordz alraLmd in fir the .1,3 a rho

ihamr while Ilw nling look ehx

mæ

ro l

Tho 4lW aclodaa uLn,rmra;u.

Hi, :hot IaMrcalnl I:.r of a2ona x F.b:e. ll

.nd x46.1 e

rho era d a=-dv& L.a:rl.Yi Ari:au JwA. 11.. .n<.+. 1

áob rM. fx :rrrn.rin e l I.GLd

LM IrerrlLW f

nw;rdv r4A

Aeu hanr slwl w .In;.rn;zÌC`..

toll It rlm .y6.1 :;: I:. Tlnr. Ilm 1,10 IaL. <.Á.e:l II.Ae; .410r.1 k aAr la_.vfr.5.:nk, n! zM1r

;..Aianadma r...:l low II:.. '/.In.. 'rindr.

Tho . Ir o 'wLk Il.0 ;erllarl'.a: a.<rta.:e.11.ta do

anylaltd Nuklly ard ean'. I, a..a 'halu Lb sow nooled

al (IryNhslio: m: 4 la.luncd d dabah rlrulnm.am n rFr .nnn rd dl.r

rttl Nru Ç m.eOn.rl "udm nM hon o M er cod al claJ

IJaryr- b LNree afna.Mieaz8 .

Iak a.ßxmaW m o1ab. rFr alu.

M K^r P1 n:Tr,"1ZoIr ivlruxoribr'wxrdnAr" I+LLl'le. ve m e zke raJ

1 cf'.i:ITrM r a

Si .. f r bJd N.rdd aa.u.rar,

mnrlea.. :r..e ono

zk tin, to, Jlrrrrr:ud, larroho,

iç O Is azrrpabh r:oa. MrM:rk A Co . JOJO 14:.reerlr

INrA.. Mì1aM'Irlda, l'A w xlOr.. to

IWorAiviaL .rlav," WS, m awl not

ad FrM, c r. 1M.r :.mNy ava0ah4 b.on kanlarr .ed rhrr:wrirs rym 4vLIw I

., tbro on, on faluba.

Ibecdaliubro-.#niwti.n ma d

r

vr Nxir

.. Ono nin. Imwxn . ó aandddwladn 44.ixlu of all lors: Use ILo rmrnt leal al aN

.Web. Oo aui "rvsrOlak" .we wd lu. .e- hm. Pseh brl aaz I la n rrif

lexuia'; duc zl loI rWi (na:'z»u an rnrll thin filmdom

re,l,ala:=ed:Jhà4:r r' vA

Walr dial lw.

doe

dat

Ìa.nf{ .na keu.a4l:y;br.,a v.lirlukl: trrwo-wamefa laea:avla!Nn for Mi An waded ;rrFU. N"i +haa I.,NFxu a udal';

.,.w P .,.. o-,+nlx u I:+e

a:;a e, model

:ip` ...eke Sold, JL. .r.

p M la:fi.w Lrllr :mdwH..

lau#Áca.b,r 1xaynn:e.. l¢z yt

.Lntlar . alwr.i.Ja.hri ::elaur.J._

atl

wrlo. :4uW and Jl ran

Gaffing Sfarf(J ti RwFN.t. Model m:Lrrn' domadla mole a IPA anaki euhy

.. On, 1old41- .onde kir. for aa:

y :n 9d wFJe on4reayaw Lam hide nStark,+.

The le

naiad I Ira, of mid Waits., d a on .apn-ea., . ems ;eak:aw b Jn+.tWat

Is um

woe. wan.. 'and alx r wan'. elk LrurM aly. FAnaaalv-arxn f n

' , Ln u#enM M+k anal

:n1aJo- r1r' hn kJm AuJaaa mL F..:: o-:l n of o¢ .Wutl.

.F ;ryJIvxi r ne4. rn 'rl a:a..a.

a:luud ! yper e`Tf4t ia.

i, J4uIMFl vN ia 411wi Wt Mmr !x-

: 4n had! u..tle Jea,<a

J

eleakMd had nM to ake a pr i r.

In

masa Nar.n

dir nil ae .kn: n.nl

hw .k Laxa u.reA

The Iaar m: n La rh n

11

SaL l aJdh . dhow < SrrA on Mw murk ern ho

made od nr.W'WO of ratan,. iierm.

up

A aII pJ ̀u: el eaJC I,r. flaa

een

I,rin _uWe,'Ósr wnw.:f

du. :0;k41 :rrì.;'.elvbçuiMI nFw,'Ifi:.

led a

Fn .1;7 nl

R i% i.r7:nr , r.nenr,.aL Ion, , %o;:i 2.3.m J J \irhrm. w] w.l^ : fl.:n;uaÌJ. e in.nc

.Je. rM. vud1lJ . ..ul:!ape :i+ molded 16.v.'IM hr Ja

J Ru ta w.+ pair of .li: IraJS:lw ma off b a ap:: Ja+Jed a.:rnn

u :wife]. and 11,11,11 mumrre or Looms ban,. .

When au,l.I+ ro-: auk. the Ni. dpla,!ir

*hi,. in nariry.Irad fix a.p:r

to

MOBIL ROCKETRY for the Electronics Experimenter An exciting hobby and

an interesting

application of electronics

BY FORREST MIMS

51:01 J.niniuni,l:, i. IR

ow.

i.4 %%MA, 1,3.1 iie .

liti C,oltlo Av.. 1003 11

n S to 0500 ront 'iminno.

1.3 ...I ...tin

Warn. [Wore Inane`, rnAtetz,

'nun Aka.. tar.. in vol., area ant., any WI sr astaIr tl'at

eng. v wry dan.

, st,

mc.onic unmmewee,

Ìt `TN,A In II ..:Ad'F...,¡,

.

I.,01. li. d. .im 4

and .e. h ,lw Aw a

iÌii%Ir Arl.a.a.:..lmo-.,

ii.ls.u,ln I...r..!,I n .,.4A

aA

,vuk.n.

u 4.4 :Rr. nn., ;:

l.

irk 11110111111111110

7911101Tygnril'1FI^'AGIN'P',.I"m1Y'..:,ly.m

bequ mroy Syfiteme. s^1elnillS).,

uab

I!. ..Ycl n<

..:W n.4,..pAR.ISIM<-.M:..m: 1.L

i.1..

in..d.t'a . }at .M i ..,.F:rt:.d

.

.

(!

I. v.nt..ò.1Ae. .r_I.

.nó+nxnx vu+11mJ mom.

nÌ:in..,mC In ,iñd .Jik wY.A .d.: i .yy` ! ouJ. n.p:.,:..l +lil,r ..

14u`ILnLeypnwA4 r:6k::,., lu:n! Ila mm,x :3.M:tm.n. A F.. ,.,-

- \ I.a... .. Y.0 a w:-:+e LeR.rv 0. F ;.wF Ipn.Ya. .4 0

¢¢:I mue. ',. d a.:J. u eá s iiAá!.r ....ta

ma a sale LI n. wa,. .na l.nw:n.ml:r.. 03

Inu.A eft,' and arynu±n. `Irre ¡AL, n.uly..n

Te. .klr .ad.

n6.

MODEL ROCKET MANUFACTURERS

a m¢wa sauu ane m.MTabkEie

awVa..inl.Uk M pcdrna and

ma0ur{nX. RA 15201

2N30'Pegn.ea2 85n0a ales æT aNJes. Inc.

Penose, U.21.0 BOR

SS ema

Lansing. MI 48901

offen wneeOynllT

Or more onf

Pox R. McLe

RP) ñpo s-.rau)u erruM evw

IM1rrnq'n"s a.u0o eryx.

linclude

Albuquerque. NM CPI

rAule .:finJ

spectacular dcuekp

r f hRB+Ped m 1rillliwrer

vaaa.

thr nrPl1nvvad

J- rpnr.:ml I+ely

. ea 1101 ruv.Lo... A S.xa V+wrrr hrn.»:: :KKR rd

a. dw Mu-d mdl.n'nu. af ebe

J...rwmJJdM ppW+.v. mhn'nwwalwU.er. Iw+v'nd.dwnm rler toe >A.

rv.bl. n.pue., :n.4 v :eLrely'.x.pmi.r R

.. I. aAd F +mmulc IAA oI+U,u boschi m:AvrnO.':In.

nny.frvnr.

pCA' 4km n. a?nv: xY fv. IAe 1 irmr>erA.rr'.. en,.. I.uv

Al rl.kM m raln .ucd ;o Ris Ilm iyJUl Iwa. xn.d .or'.>neei d

aré a1.álieÇO

iona!: aa g pmuM, rupr n.nslre RA rob, rkra Ilrr I.

l'+ ie Al . r l'. uaeJ 4..IudetlaDU JeAll naAUa.leM1 Y.:. rck-

unmOmannr.fi M1:rwn'rl..lHUn lict.nrrin .I.w..r In viúlìaK.InaAv 5001. rknl aRn U. m.4U> nAuvwa Me.

a Icw arcdcl of .nr. iavwamt..[+ar

' atoaOM.myraphy. ixed luek raiM ank IM+ug

xlnl.

175-MHz PRESCALER EXTEND YOUR 20.MHz DIGIT'S!. FRERUkNCY

COUNTER TO WORK UT 175 MHz

{ n+E ro w1n xl.

rreAa':k m few ici, aM1 th. .I. tud,

ku+ Mao 1eIT iiil:mn lMn:d nn+.a :rz M1n:ry.,a:ea up w

7

1 11.1wv hza .J ug4i.

k T1!I. n+ 'r l:t e: Iw.::k un t.1v:J.uu.u:

Oa IC

Malt n IA .rn '

: Ay: ur. r:.:l .rv4f..agq:l.n'e

ux:U:nA.11n ual !lWl:y : : I

TTL .:nl UTL true., -In:..:rüJ

.n

.Ñ Aa m : I le. .e: n:ixmr. : rM1.4:`IIFR: A.iII. 1 inn

.fnnh4 ArAn Ica 1ilr.. w:e.11.+, II:. .,t' Mu.:M1. alma, .1'.1'1101C w .11101 ikJ x.uilufienn

I:n:n:r ie n,.1 n I:. 1'D VRC

lieorA of Circuit Dea!

Cana/nslia, It IN 1

mcr .m

dnr., i omit: We'd '

nml In It! :mä .rm1F.:! In Ihr fini II;'Iron,, 1:! :unl !C`, r.i:icli li::'riJe

1aUM, aJiw ipp:A , 1 I.A1r;ya..ml. ,- .^n xr

NAM.. uTraimeNropS INNioN,0

:° 8 I. LT-. L.t,erl.c. 1,a'an=r= II i TI 7777'

i`TI h

II! ixo,attr.e ,awla, a van I.., ill halv-a. ula STioh Iii! ,ii) a, 11..upa: (,td Itemalta a..111, la ...cant .1 Ix

01301,11a. aqaa.I.,..ey ol 175 NI. Man wanca,4 lhaeasla ...To Itau 17500 ao the Mr raata. a tamale, that 12 ie The v;aLial mar ava ,aaltr hair... a.,

he 1,11z pOSirinn nreawfu, 11:4. ilaa $4 Ikautad mal -ara.,11y.

SIMPLE THUMP AND RUMBLE FILTER

raw i. I, oe plaow. mot Mr 1,1 Aral toed

thn snow] plamd bit, us k&.,4 145 arrargiag F0.1 armaalar.. :a Me E,

t.

mIvinier tam.

.,.:rcr.

k .n .ya..r.e ..

il

rra m'n,l

rv.I4 .ìl .... alrcl

:d :Ir ..i. nr9.4+1 . pin ..IA . . Arr. u:l

mN m.4rr of q

Theory Al Operation. no r_n ion

. eh a.a MAI m'rvuIan'nt .10

hou

I S.".'tln r

.

11

u I:nM1a.

tomprrahro myw.:..Llnw

:Lrph. I .. w RI +M muRJ:n ax.rlrJa s,.4. n,M e

k Ile rrLJJr auiirirr"I '.tlMri..n ..i:Ia..vM M. r:JJe,. Á ihr , Ì:. ..:.4+: of tmf vrc A. tl:r.4r s, I+M.

N: M.M'1 and s_ I..Pn.m:l.e u... +.nl In'I.n+k more al1'nmm..-.

Caulluellx TM aeupwc.. M mn. ihimNV or ALL corm of .ml Idmk

RR, wnl 111 .:I 1r arnrr an.l IM In. uiWx. m. rMAnts, eamr+. .bune 11

a.+M. em. er. Air Ile ih.m-aix rWJ. <.IdmrArm..LPF pAnourthi Solo at.

An. rvitLhLA, .l.:m.ner. .b,<4 tw rcóawx aai:ni:n n' R1 ti 9.41, k it. mu!mrape.AlFl.ui.IMllil.F.: J

cra¡ mrWn wlh , m.eMl krab n nel n ie.t lal.1. kr.M Ila I.:;.Nn1 u: ae..,:LL Af ,a InCr .w..kniwLx:.,.

n.n,Fé+....a..'.

I rL.np .Le .+.1+.i.:' A. . N..

lCI ,w...

II ,m x:.A 1.. I.u..ak IIn .uFr Iaw Inr laL:oa. y..m.,. uv a<:CswJ :<

n f: IluannaF lLc

lamµ In+.l red ::ir-lvrr

c.r I in rlkl xJ1. :M

fu Aur

r.I.iv.u4eaF wn ..lµuJ

CMatRIIL I.n ror ,erlr <r'I furor, uN he. ..Je m.o.{ .eL rM enlm(er +p.Nax ,m.n.l IpA4 1<,vb Ir rrnn.r. rA... an :Ln nnn f111\IS

e PXI ..a.N:u rnpv N".rn I:w noel an.d vµ JIw.. S! m wna Nu raan.

Ia l'w :nrea w ItlMvae.

PARTS LIST

ENLARGER TIMER PUT TOUR VIVO TO WORK

IN THG DAflROADOLPH

R. MANGIER!

Ulh RI n . welt :^avv

e Awl AI del., lyl.h a

the .eaJuWrc:hrm..u nM e.a:ra ihr mr .sJal.na .atn'A rrywr.dY..

ç now I4+.Ha.r rniNnm u. °.. ii w..,aar. r:M:Lx, :L tower .n t.

r :i,11 bw:, the á.wn:naw has 1:1111

aFestcn...lr...rdaati.n. .nz Iz

enlsowts r.: 4 err. segwete..Now 11 Woes M1tso Iwo Atel ._ RHS

w tr ar I.wi.aa. b-Ih Rf ;Fs.. u

ab n ówkvWMS

áS..lw:. FMael^ól!M4ht

:fee Yircn m

Su:J:A ssylhmal:.IB AAA .v:l rANI alulW.Sin.Id.nudt mx-eSe

wx..toi aÚ.nl a_ ,+A 0.1 ..<wuk

GIiMMbn Lnd aPrRWi.n. Tn..fileM - ..e.: wet. G.:I.wloro. etu.M- m¿Rff::Grl":..eLx.,.yn,Sè.0

Irve :nJ.twrv.n..; MI,/ de, lea :M H: seset, iFe:4 +u

nu

Salte IF ILßnxlalll11 t

iM

Ix.l In.il wow e.t...1 F¢ IN .ue:niA:

Iiie eel! :A hrz.bleS e;'hnM*ilm m4.y..

s;r:°°":1:..( n<S':neal To w Ik S. we Pw.

nanú.4'.Le .M LHAt.... -xe, iuPr+

i+l ind t Ior NSM. xe sh- I.. apeq,AV qe P;S :

:Asso= h:M , sew. ,eMi.R n"m b.. ...n LWir: hnn k IS veud. Tnr.

rueu 41

N mitin; a R!.

eMn s4un IXii.:0.n m.Ñn :I.Jw

AFnl.dhnrsnysa'ryer Mw:..crMS_ w.. x:I:dw:> r=a - ..1113w10 nt I:n

stole eea a o- .o sky, M : .0 hS

D now.. : OW y' r

11 4 A doese nryttwes. uThee A. .1.. .IMa.....A rnl.agtSa l'.n,er uuui:lk

.- rym.{_n 4w, ei

xllehlrc,+

FeRI illa à Pn

,Kw stel AW4 Iw :eMca*MAI6

..Ii:Ren to nlbin M.is wahb aHw. u M..d reylir.

u. As v Assl x: wrhv4 Iw'r .nm:.- .::L. sÌnl nisiH,e

nçr

a : ee

ttn- MI .r tb.I wet.

'* ai;ew,¡w

n

vM n!twee. non. Iw

-u IM-rr .

5, u dot sell MPe A,k vn:,n Lrup:.t.l wow Ow rAen:e, we vxl. prtnH. rg..'ro weir.

lk tow e4'MSh yews tows, toe rcIMH.Im.nn e:nnax re.velm+mb.nN n.rma ;

ÌeM .9 o5 u n .1 IS4T ow

toy. rn

.w law n Ae.ìr .-0ea '.Nr...

x.4m .albrsv.

aI M.rc..ea..irn n.lwn.I

nl: w tS>.lde.lt Lawezlï.an:Lrc Sn :fe m':,pt ul bijii,. ..d .Imaow a.w..n..Teia

ea

Slask UNDERSTANDING bes AND GETTING THE

MOST FROM STROBES OPERATION B APPLICATIONS

MI RICHARD M. FISHER

III r..IJ...rn...11.flJ Irvl . l.v

n

.. . .. .. ,.. L

.IrvY. d.l Lw p M I .rwll...: nkr MrF. LI4Jvnl.aui:nlp..:vud.nswe.;nnJ in tn. r.Mrnrin...l J 6er:ysudrn

lu ya ::ro-..\I. :I.r.nnJr Ill. lul:n.'llr Ji..L' 49+

I f

ugL Nw

n :u Ira A:Le ç.nitvFM úlm the rb:L .._ x3.ai.illnl"!n.iknx,wFWr hn:m I.. ,ala nl..r F

`... :ii _ Mrmirils Rosh Duration. lf 1n. I v

i41JnJnv. fir. ..,1 flM1fJllrr..nlr:.n..vA

es^ r n nrilyFllanrzn ¢ua. nFr.mfirr IM, ITA Jv.... An r?nxi ,'añfiuri mane

nnSnr..4rl.v4.n :Fe J

Iu-e:w,.v.errrwhrrcMnlvr':

ï4Ìtr

I. d bii9...nna,p t

1:.

I'ylrSr ylaW. ru:rp.r IM nM II. Ir.7.r: :k ndavrre.

vnrdrM.a üd Nd. rFr-m IJUI..a.IAl:l

uYl:. r\Ile n rnini -Rlnrrlw.A.v+.lii...v dr Ila.lu.awa In 10.1. 10.1. ryrL.:r:.l « r l'M.IULu rc

nlirmnv:rnirweM.v..<\ n? a;vn:y rnn. iwl Inn : non, 11» i4m.,rl% ì.rla

..v-.inFl^ vr.uurirr:t 6r:1eerle.!.r.r.. 1iT0

.p.a IrnNi,úni.J.r9w rn,J. a11nn n... mv nn t. on MI in n On çrnrIA non 1:nr rvJi-

o den se., nm <rcr}i in Ile Men d IiçL; m nlwl:.a

, mmrr d the p..v n Jl<a,4 p.o

Y-:en. ,:.,.,..«IM,,,r, .n,r

., w.en w. we.l IrNpeJ N

j l. e IM e.cud iw., zrt F, dram. - u,I;..raY:CYwul.utmuL+Yring

Po,x..:.,r xe G.p.,U :Irc.FM ...ding .daC.'a .s.M

.e.,, `Y:Me-.W:.St,..lu.wtN

I.., :e2 Le. n. p` Arl. ...Fa Pm

'w1v:wl W II.i e, producine tnw Inglegallage eplFe.

:...1 Ih' II I M'. ,Ap cn 1: k:.fi. I./me d: inrYyl.lefd.: Y..,,w.e:le" ,n .:l.e rt

' , rmr .Ilw Leal n,JII,..W.

TI

} T,,. NT NT

Ju

nIy,.IMFWi Aev

lull, na,e e:n.,.:re, rm. :..`. D.In:eW0.wd, m.

11L I IW[W W 44 (l .nmm

r.i..+Fa,,..([hrd.s

w,. TyperaGlrns.(M.4,u.YF.kn:mque

Ia,M,, rN `dx F:SI .leK..4 eLdr,n empaeitnr fr/

IM wed, o/

w x6 L: .,w:6.411a:

M, n, W E:1... A `.' dM mA pu.r IM . Mú¡.n!m a

9:.w1:'vn...i, F. `eIrnu..,ho ÇH m M m nak v " Eng.." SsW WL. Pewee. MU awl cl,:.

e.dL ,L a. weJ 1: IIr u

anm.,' (ii li iPb: acL:.. 14.1 { q.3e;l+e a

áM i° pen x,v

mr mist .Aiï; : n yM. m,í Emr

i°m5r:`ä" , cl 1éopé m. âëma:,

n.a1tih xrk+ nitiont Ivx., s

Anoint rl'Irvrù1pps.m2 ..1'na1.A.1x

i n1r.r. l'(. Miw-.19 "'"r1w..rri'r;«' n.W

.. MO b mlQl'v:r.. .

ae., 1 a LIT to rr¡,: .iñ in oil. ' T,

`41:1

1..177 aberor

ll?T:11:.n . I. hii Iìlinil

rM1r.

àl r amhc r , 1k1:w

TAJeaµ ,p ,tiun.l4 a-:4 ran M .4ui:4.FYyAJ1 r.r.. .

pr F n pAhaJ J

in the

d la f nits. 1 IhJ

ai

IL anino in

Ik.h IL1 I

b áFPv t 1!

A 11 cl

In 1 tioin

Wu.zWiV^¡u,1Á n« xube a1nnW.1n1 - n

ñr'I ° .n`...Jrni 1:1n This moan

/ r L -rr

rhra.

lrïlL,

Caution. oeCaution.

Liy

ninon

44

n<e.a n

n

n. rnlare+n.tiJ. nor; d1.10

. wo,aoe ILil+ or. rn ratio

a

eNrWk tton a 110.11 v91.apiorw

°T.itt r n r :r wh. . rca

1' rM eFarla : nl r rrnon ian. C h x:9y :ir.:1Q4 11x 1.< le lwxl ,n 11n l.a} sAayx'n

rynwy d 11 .'rM la:L m 11ü v,axlw. aheA +n mm1 nM1e.,awl.. Ur nm Ilart dT: algrrrc rM 1LY11114. 'I ....u.. a1r Io:M d:abrpnl !eM1n

11er1wMVfiq:llrn :Is hdrol:4=.KY` 1ukh:g..rcdrcllnoJJiaxh..l..mM arRilrM.1i1ti. _41Y¡auktll. dnny. lobe ten.. ®

Initial Adjustment Adimiateut

mminiis. um the Inl,ing pond,. 1. Mum on an N. mul mi maMuls

In sums d /M1 outs,

3. [mum die pon tie !toil :A mrh motet w II, .1 Ql and Impel, 10m1 iminad. Apply prom

S. MN.," /hi mt a sullatm mditalimt

Sel Rd la 11,14101.1 itatin RR hi gel 2.M.14, sins, awl

too. dir id., 25

A irt Ion Mi hm tonsionnv um." Ri Imml to Anima ondo 1,1 al d smertn

7. Net 1/7 lo *morn ,m1 11gR t. , Luger iteresms

S. Sot in ihildly remasd mlittu Ibu diuunei m Invo.

selhog alma 3,1 miss, rho

lnanis tig Inn im pumMle.

,..A N, Mid 11 far udim dimmers, Nt. same Mtn

111 uunimom md any Mho Jimmie tri ...re :lit le stmstrni sinl mid the soh, .1. iv str, 3 lles, !le

tuts h. Isme ma. lames mi mummsot ulm3 MAW., th, adjuslieme.

unless pins All mi., 11.m,er. Om nois mob, o gnsti Mu) ei lemliol semi the ins UM luros may m mess. saw to min. lot emnponsin rari. 143,1V3Ili 118 may ool Los eismeL muisinsre At lineleul poi. tat Ihe ilimos,,ettat 1 se on le lours male. thls 1,3rem. Morn 1311.ohrs. losta

men will 114 ;old pmemd she Wral ormot jaAV SON uf raml mi.,. it sheuld

ustn, 'yen. hut a 11mt ,ines shmild mt Isu.d. gst

MOM,. wnnu during me. Ind tins 16 Mr.

SWITCHING LOGIC QUIZ ANSWERS

71:r. wtt Int r.. ime.timt, brio, miss, esa Med (Inns, Fees°

'St I L rielssive samiltl or-

a in. Ann. 2-11 Ism emissive (111 /JAM Pi 1,11. lIlI. - 11511 II 1511

el et... uni h.. can lus on al. mu um time.

1-41 Mis Isamu, OR ottrallal aummir either

ithmism illhet mete, nmumes

;UV gratIn,"ZilVirto:1: eau :memo.

F AtIVIF0 01 rho Ilite allthme my. "min, SM, .1111

hnt snit stnels sMtiot mites,

sMtelt my thee sore m rtssm teal of Ow isnm en. take Or, in ty,srensnee ltom

" 'alnrr.V.srtl.,!7=

10-0 In MemitaLsartslát.Lrantimm

['Zs L'ortfm7.1trInffrrelte

Low -Cost Electronic Thermometer INDICATES LOCAL OR REMOTE TEMPERA10RES

FROM FREEZING TO 302'F

nnh

rnl Ilw

BY JAMS R. SQUIRES

.n.

JI:

4:mw+s. n Mx IA:+.. Tàr oml M. o--YUU:e rrs agnaxe:a Iwaa:rrrcverr rM:mCuvMlA.:li.ni.nlb.rlrI'.r.I Mlfiri.vxlL'F;onrlWfirfl.enit

rern ...i

I

us.. Nrc b.,. Ilo-eme

:e , .Mn

Log aM ' rf wl Ì J.ly, 1.11. 4 glottl new. Itersetostatt. 4.:.. I.n. oerds1 Iww.a 4 lw I swot. v osSvo r. '00 :bsumwwr.r5eaArre.sett.. RxAlSI add, l'.I: InM rvCih:d¡.A..I.aÌr.: emrt

i::iSs.n tie- Reds100011 01 saner that-mister dotes

wma:rf d.n ge w mines nlmnt now MraddS metes

]yw. a l,emmwlm ueç

510 :.u,l m IAn1. :11` .o

xa of .. llc .atw aí Rl ù ah+.:u c.

IMI iv wî.l :n:bvIe 10 m.l. w Ib..w4s.á m c. rw!T.. .

:luu w m: Im M: at)ill Art u( rw.x.une Av Ñl.v.'.. n,n:1s Se

:áI.I.KIed:ls'veldts :.d or onr.xhin oasis, unl

Í.rI`IA:eAwfllflÌnlwr ilN.r w r..nd>. inleuu i i.lus.

IA. shoo, lrle mewle needs rv nta!wJ nN se Ssogt2 e! IveawrFxve nF4. oath Pl.., Ilw o.lwl rood. Tlw:r.+r osnwn

is not v. ulevrs.. I ylw n+svn.m

ll'R: u ! w Ibo CI rro.' . al; 1.1,0 m Tl.:folmr ]; .I nl1'urt

p9 u!I rAC nn el i:ale. k:wl lo:Jl

PARTS LIST

+.fu

CONTROLS 1500 WATTS PER CHANNEL

WITH PRESET STORAGE,

CROSS FADING. ANO SUBGROUPING

r3 lam. b IVm\bt Ow .R. J.. .- All u, in +.,I'

^1J Y' N- 4e G I IS 1110 Ma f the

Alna 11µ ru+le Ìr r-..k ,... 1

1

x 11m búla i. @o nn1rJ. N ila ,'ï, r.xw. . w , , 41eN-. wNl ri , .b:r,, aM

. J 11 ihr r..e: .JI `0 µyx

u Ill ,uurludl.l:Ir r.. InY.:l.ui.Inc rbr. ed.glx.1µw11.

.,++.1ri6 . .0

nr Yi1o1r.:emr.,rl5 Y..Ra ssilrc Ir.n bt:a aLavlrr I

»IrÌN

a+111w rH..

1n.w .1..o ..II Nm:ç. Mwn.v. r1,1r . I m a x n 1xl . wla

aum.nvr.m..,d m iY.aP+^Y,I:x.u.+r..nn,r,

M... Irn.l pawl, rxler remr0l. ,r< i:l:in TIo. , FIT Or

. . _

b '.L I ^ RmbCE

<al bJp .4py, 1. R In Dl Tor ~k.+ m,.{.çe on

TIE .nik.1 .10puuvu leer.+e .11 ..K.1 wNlrl. um/1. .x..1n wl.. IIx T.. i.w.w. 4u 11, ruunl:mm., TI v .lin.w,:. fw..lrrçuaJ. ITr.T: J:uutl 1v i,l..i r:

.:1

luki,.I.r4.1w.,NPN.rl.urnn p Yr rurd. T .v.. "ï0. ia.Imxrr,.nrxu+ .:m rAe l5:xr+.r.11r1a+Ì

a'a.uM r.wYM .l .m1eII. /4 1lmYmn Ft'I,R aud... -

,.Irrnl,.w , nNiM w:r i.: :up.:l1 , 4110110::aF.rr.. m..._,:gvrn.ml .r. én,1OiJrnx..l,o.l. '

PARTS LIST

naed

nod o Itoe module.

'21.74r.o.'ittora.u.Te 17.17471:1

%Loki Am. 01.4 We Armor venotiLied dec. operrte

LIN ;M1;1.411111 so.Nwer8 Nio 'mac module.

Fuses For Electronics

BUSSMAN MFG. DIVISION C.:

ook oN, "do Jarsirou I.

oolou,r1 motor,

.go ko) N 000

FastAclikg Fax A000rloolo too, tir

Oro 14.,A,

11® é !c` ÌiL' e 11r %.,krz.. ia.

imn,n,Me .: rrfi::: .r. Mm.

hn ra

Comparing Fuse CMmtlwklkF Farn.- c

I Ann IM aen r v h. II , Man,

d r:l rc, lind

Cu..:rkr d ìd ILrw ry :a = M1L

ng Ixr:nr :rute wY.rtaê.. .irr, uLkn;N. IM h':ni'. pte Rr .:wir mrF.tnry.J Ir. .r }r.err rhor .M.

+:4-ndv Minn, Afiu + s ..f:.F.Unr

mm+u Fr n

k.tw rnm., ndy. tune ai

raM+ v,ti . seg rlo x

ns mm'} a Mdw

fFI,

-Ming

mf,

iw,

oren my m-nnh I

La r: fnth,

,uoY. nx , ÑM¿db fi i"' efn e ,l lurn Mr ohn.lsl a LT.

l:rkot:m,tWly.r

n i, wdar. tuo l_ld

xNr.a+Li<y .

+r.Ndg

l

Fn n b,.pu

<rn.e

ve

applied ti

t11 Se v a main ntprd rci M

tm nm.J Mn r

Item MnMr a d. +ld h nv AA mare minLdd

,nrr ak.r WILE

M

4,id `I

ru1aVka

3e

,

e

t

4

s.4Ld'_

1

i

.

J.

:h2r R

nA red

e

eku.l dawM it s,L at.enlr-e. n:InrnM,. Auw

1Mr am inn Raun wMm wheli have wLJC IS"r,nl.lr.+n red w uxer ry..,+r ,eM.. I-n

Iloehoe ,tin:<.mrn u ph. 't.rl .in.

n{i1uo

hn, aM1nn r. a.yw,cá IoCnn nMm.a+4hnrdn Irn 0.ra M :b. fun tu

+:i4d mM Yr puaU1n TM« Mom h,c Ir: .,:b apd;:,:bo:

anJ + rounlend r, lm I n,Ngne pa.er ücTdefine r tmdMara¡en- a.sl.p.ngnr.. pr:, unary n,nJaLM an dm rwMd.

mliennInfier trim, M1:

,'I rrñll. Mnlrnoun

Garda foe Sehnein Frs.. 'FF..,

fowMmm+iL.MFnr. dnl )wu

Aear._ v. 4'011+ I ax

ELECIRONic Er murmurs SAW..

in dr

TABLA

fon An EYhLLIRüIIÁ, a ApYn4

TIme1147 Frs.

Ambient Ó

Fent ur nd

%

Maim, :hi, Om mat. Iliataila auald ia slant lam im at.

.of At. :It ilral amerilfe if Om ramMin, mate

ta"'.:ZittiitZ7a7a 61, clurre k prod.. Maw t'r WVP nor pm., mm.lae am. ca. a.m. alta

Imm. mot 1m xitified /11. an ...topple al ti atm 4 a togilt

realite taidi a

.11 L. MP a., Oa tate ahatic ol 1 T amp.,

Tim 7I

mortal Jolt Li M. mkt, an.. imami Ina ta konco. 111.,1,1.1.

1, A 11. hi pal, Mt 14, 11.. Lam, um di: tmirm,

Sttomamve mi Stia rid art. MitaA am.

a mail.. fn* a ma. Ha.

TABLE II-ELECTRONIC RISE SELECTION CHART emu ca..' Range Ralias Typical

ARM 11003.2 ABC. iSCO to 3

ABC

MOL

RCM

Vg I..100 to 1

3:19 R1,10 31,0

MBA 1,300 20 2Slu

250 or less

R.. is. I2S Isss

MO or less 12S or less

2S0 et toss

'1= .2010 30

Ito la 20.30

LBAN 1.30 OB 1 .10

RAVY lo

:=11;t::::11

:47 or less

2. or less

circuit,

130 or less

r.,".,1Z`nr I

:t Ilmr the h." :b fad nrih.rl one

pa

:¢Ai.Irvt4i.nvw.11wlfrwue u, i1W Ars. akr:ç ni:L.

M.dyg.:,r uW a.w .ean av;¢I 4 viJ4wa.. a k.l Ir u :ia.ü rY ' A.W.r:nral FrxrAMwrlh<uu.lp:.yl,ln.fi:.l.

i41 be Im. u.:p:n. 4ü4w',r:t, ni.. Ia n x: . ,iu..:. the .rW + rM1r 14.r

wvUu.,. .AUaa MIa4a. t,rAu:rJi In .hn

rrWu 'nm,... :á9ru1MF! 1,0tó<4 M.Jr I.0 he, al : l n .rrp:mn I!n L.re, ir: tn w 4r :,N Wuh.AU:lm:l. Fw nn .S II.. l'_

Ira4nrn..rlw:.i.nWlun`r are lehhr I® :Iv W.u:uá d I.:m u. the .Jdi frwr va:.:A

I ru. nnn.rl I.uln'.... eitl

lwrUniml'dlI. L.III

rl A+cnl I. p 'i,l lan.

11. fun 14na.en IIN un I.mpm r...ML :Le :VOW

l xr ryann>r wAA w fnv 4, IW1 v+ Table II .l F4irfiInr.... i h

.hn f :«I .:IA. nfni r1 .44.4.4.1 loue , I.e W avaa:: c:un 1,1. x . ,I:rr..ra a r

WIA..: :.:¢: ,I n:YIn.

LTIÁ1 xlMel:ardl nn M.n w. ,;a&I:An.r.rn.n

ill ,Jaü

A4.I.:rrl the af:n:..anni

wr4 irhr rM

r:yn.triunu.:l;.nm'

ir,WlrnwuJrl:l,I r. V m

"MN" OVOTOVVIIN

,MunqAhra. 5.

A.:y url ,n*4;irk.l . w

u r4 1 n,j.r el Ow i 'IhnrAe

vin4vr

ir>h«. aII hirer 4a. lin...nn a,ni rvM :, .1, 'we anv:k Im 1.41.1. II :Aen.ir..11

.relrr¢I.r.r

ati k .:mnu,.k;' nDinna:vr. Fx .lixvn:ura u. o..,lly

r.eA

am rW when .p.. is r f M... n:,, r..,ar

Ja niapN

:na.r nn aaey m.nn / a wmni¢ C¢nnaow.

The HOW and WHY

of the SCR PRINCIPLES OF OPERATION AND APPLICATIONS OF THE SILICON CONTROLLED RECTIFIER

BY JOSEPH R. WOKE

::gaa.ilf.v Ixh 1:. Ilw

Hon It Weds. T. ryn+ulen of SCR ¡.rL.w 4ap uod.,olovd ro 'nio

lom

,4r'rnlrvllwf nudc.riiaYm"

M .I,k

J1Jnl.,. i 'I,anyu:li.x5. i:.,.x , - , M ,ñ u ..,:, L'4e: a, . n ..: ..no-n oo

Ix. I(t'.Mnr..InwxMM1M1.wA.u. ] Ix ÿ:x

isl.,b,

Ai

SfR

Ol. no

mS aawu ,uu n.Vta:d11? M Ilv

,o14.4 to .J (1_ m çrmd P. :ù. II,

Fp:{A' m. III :. iw7al ilr ,6:,.

4-rMnJ Acni. ail. 4<'R o r, o' (,? Thaln_4 rn hu rRk -:n,.,.,: oll x:lxns +, o-,:nk k.i i. aM1mul .,ly.: 14u, i.. MxM1 n511:18

Roc 71

_ _ - _ .L:}. ,h:P anr. .wa,vl e.l,. . :r.s .: ,.. .. nu .:..c... x:ee.. cxr. nl':, xn, eR M nnoE. II. wrea 1

112

NN

1M he

x

1 al!1 1 . Wel a+.!uvti 1:e.v.e1n e .e rinred

(il .n1(Mi. 1,lFam mq11r 1h. è4i.nma +.0ú 0.d x ß:m n ( ,h! +n'

;Y: ate lekJON.,(u Ore ow IbCnxN...h. llvmx4, r1k1.}:dhM

:..kti.1, ln,aiîe

, lore ññ : Äo-,Iiim..a , .G

uer (ilu SCR k(nk..WYana:l.n:v. ,1 J. :nmx u.il ..' arid m:l,Manorkeu

JuK:ry:lnnMn,:keaun4u,n nNx(

rue 5C11i1W:: i.ke.pketervue:x:... auriir i I 1M kak:u4 unn:e. I

iTak,lx.á f::SYNYI11+lw .nr.:ll:nn

xf h'x bvne: 11.. la 1: -xl .m:enkn s.. ab Ixu4 Rrv001 I4o1áip :A.:yx. 11k

:JY M'01.1 0011 thy pit awan.xvd 11+ Nu0y1 low h In:k 0.r«e .xllafx *WI

0.0 fiS1 wlhxb(l.lr,_

111

0, 1

Men= ° rx w . ,..m. . i' J °T°' n 1 `°Ì]

Enean

0.1

ruri

I: ry F S X

w.r,

Str il rn.InTrria.,

Ir

rr.er.,i..r.lir'hrai

1,140 rn +.a iqur

N

ñrn`ÿ. ï ;i.. .g .rt

i X:r.:ñ::a a:l.

w. " .IL,

rdv

r'r1.rvr`dL.x1Lunvr.'rl:,ay, rrrl..

a1.F.aa.. .:r

al SCR rratlmgez le, imenial.. ratifier Orr. red, orsr h. ' Lerm}nrlr AL ramu from SR m rn ry Xr Ire.F rr.<:.e uSCl;'aaIwvJ Fr. A

Mm., .x:rd}J :uv Xa ..un+ . Ikn Um. ul eher «Ir of

L.,.rrr,-:...rr.: rmrhk...;

rrrr -h¡ra

.rn Jr sarr Ir nnrd

.Ir1 In nFn . a ,e.n I.udu<vm r.rrye. e rhircMwr, "ha. r 4:'. . wT<le.w'ni<m ihr md:r

M,M provide pd. nra

aiM 4 sri 1< - ed rrn r.ln. ..n. , :n,a'öb dm :. C.r:r .rt u+n:l . rXnm:;mv I or, .

ñm ¡prow p, ,. iùnl n' . k n.i

:. . auw:à :rag.rc N dm.A LL}

i .{ fnr Lwl v:1 M3.gin daXl I

.{a:ryrA r.A.çr r Fawi.nrl ur.v.LJa -Hr ,.Ana arArn¡r:lmd en-rrnr a-r

éalwvJrda.:4r1M1ii1111lime .v: . q..dn:ilsrpi..r..r.rnni.r..ea:hdern:rap w X o n' I anl &:nn r.F n n.. l' are

arIserlatirrii .Ar. ,in er .A

raN

4

p.Fn pi..n I

r

iGO a ri nv8 v} 4«sru.Úa r :Mr

plots. 1Sfn II* airs 04 +

.' vAaá a.. prr Ha

1 fw.Alriyits pan : r ,..tit.. rw d n Ms.,

y.sà n.;áar, '

nb luak nr .,a:,.:. r, :ls a.X: la..,.,:

NwsNXrsBCMnMrblin.IIIMSCR :Mnr<:e i.lcaXaale!.:a:x..:rFndw. r..I.:1:raliy..r1 h.e,r.AM. i-

aS:.sadnr1.r n lrr4.m-n 'l

+htIYR.r

<rú and ir .4 4.4 n++lrn..

ITr Ì.M:.+:r

y :sillies ry.:i?.,rlerr N.: lh r:r :

rumIW"I Y4.Im biro #r: ISul :I Irwl.in+x}rl IcKyl..l.:l..ir.: Jag il. r.rawr::nn !r.,.r.r asrnpi.A taps* 1 i rprra a<rrJi:i..n:nrrin,Irc.iEW

aa,ale. A plum, ababol erwabb, wk.. a Ha lata aloaa, at Fa t .iat ilop. no. ...law..

Oa, bolaaolab tho

afro ab. aa.00d Can u-b. SCR t loaatio.Iaa io tam,. 1, 4,

Itaaae U. btaw bouta it., Aar au, taataxatalbale avto, dotabbaas ban kla Ant brabra r oacapa ,oaaai

T

",in7-70.- baix

Fi SOONOLIO Of a ly0rCal

tear. bra. Sr.,

1" Id. unique pl...., einek .mly n

half. awl minures in mimpopraial farm.

ea mecum AfeSeee.

Aloreeigheno, is ear plasmic diglal amok fiaarnA &if,

of lama boas ham. le, a rem. end c4

law, of eliorlayeue Uole unenowee a alaio. llomorliperhoun dulareitally oho area eat nenorce a ea... at a raic of e'rat

L;Ve=roe'eanorlotcat L.SloSIOA teaateo atant coo la el, 110.11z powere Ina healown, Thee poolehnuo. tidal Aar e:en alen,

rao roalew

412 T h. ic Aòd«iics cc Aun.cUidhpL. u Il a:aueoule wed

oemakai: at.% Mo.. Am rerfout s height Wawa. iiih. ane rilln elou uol

uherna, , mat *co Apia aneas. the eau Keue le Mt While yea. foe env.. veheh ia en a ah.neg aenerir if,. OM, f. Al, and

aed ecuroel ol Was,. An an apollops ad. 1,12 the 00.11,

e 111 Are to, aenue 'OKA. outale .

Hoo 0-11.'en1 oantolea boo onafau G. alhoela uf I, uaaol. euree. f the ..,.lc .ae oleelated i,, Ile eloAk daaelod Aaaerualesa i, tc IC A Ise p.a.., ei.euo pala ate, 10 ,e(Ondi (VIM,

inq

III III

Ij

i I {

o-

.. 1m1

SD As T

MWIü:11.o.ri aalv

p,o w," o,.e ryr

6 afl.JN filiM1 M Vu1.1.1n1 1a .,uni, v.J Jcad.

'l'IvlcnPO::f 1!u. rw:a.1 rp.+alv. a

:.1;'h.::, 4iwv W. fiaLrlÁ

rM,1..9rn a1 W1r 1.r.h.. Hih wOn s1.1.0:v1:0 w- cvpaawQ w 0,06y 1:00 arv:sl W 01:00.

PARTS LIST

VAVI I °de-,3

.'* ICI iN

aaxlNma :7: rgY owoVp.

aM Its intro. DM vlry IMefll\nIM tam nNl (valor ml

ne and IR[" to penman,* maJmny penman,*

wmuY rI'Mlkl). lao 1110\1 i p:. q:ammrA

, amq ' maurxrc .` Ia1 B: »

nnble , IB:D ,41n nta Ik1

nrnl,oAe nrpnM by the M1p1ax 5e M TMnqevll d Br N1,\ 0,.,n, tv1fun

ally Mr ens mull M«? M Inni » 1110 out dun I»'O;an 14 ÑÚX i.:, 0a1). ndJ:e,hb:ur.xcnm. :w

Ihm the pnerJin% J,,..Kpri:a al IM k51-MUS 4nrvp-vn,!+inno. It will W need Im Au. Np!rw ,yr.e. 4,1{,111:1,

Ines the Jnia:J arlun,::al Aigaa3 n1e.. InawJ.d qu:,u, xnn.ism M hum kan n ae..W.. .l : i , In a k

p bu ;wn :In kpnA'm

b.kwk. h n0en:n «mW w:4 1C

m.Jni.ann,mi1An.:n.:nAkir..,un<x uuk i'ryM1n,4+.

rmv)I ,Tora1. a1

L..nnrkg m evm i4,.a pmdu nlen alms 13 envl'km:M, span :o dn.c

A:1kk.lh-ein. The MiM nl.lalm An.naimi 1. <'l su

1nnbwNn 111 n axil Ai. 13e..1 ' a M M3 m1 ,gmal0n

J,'Wn..alrvio- More. [ ,p f'.l.e. FEi P.,B1vw11nu BI, Ie.1xî..wp 115 » Aug. rapx:,r Cl. 11:k 11.r.

Xmqlb of ,k wens, Mawr. ink.. ó and q tom aóevl 12 W!B.ean..A 111:Jaur SU MIIM.w.d.. ITe Um m.:nk

men, De BCD ,n,pv. d ,ka :APB :: J:,;k.).

Ñ' wma.a.`

salpn:a J :. PI a \ICYuu:w hu,: tiv aax4kel a! a.i

a 11n ,d. me 4ku1, Man.l. M

,Ir

0:21 n

,fyA.)

O n . 15 ana]a.a. N:alll ine 11daImJli,

lar In. i.livke I+ne:ndre,r 11

1nSn. 1Ta means en11n15n9

M.., Xómml, Spin 8 b

`a qod m illo m al pmve. {Ae m,.,npl

The pans apple . w,I1 in preen Irmana .r . fnM .a:n,: wiÀnx .uka iDP,Mnçl, Dì, In v L,klln un: Rñaw:n. ad Gu eywlo, C'l.

CantnWr. M:k,npa .kn Y '

slum MIaia.awp'aenipntla::;l,

l

l

mnk w y.,:v'^paM

Á mnn,r 'cam , n1n alum n i

I pneaaa MA ,a nek a,e,y.r, ermine she w: M..A. A Insvpmer ln4Nuq ism

nut x1

kks Mould be sand II vaxvÑ ; mal, small 1pr

...n.. m l.n.

1xlek ,h i.Ólr.n. 1ar p. pa Pm. a1a sus*.

:Ilmaan IC3 ia uianeh nnxd, un,akd :hr. nA,h.i:

directly :u I1. K pn. ,u.11111:un1 allm the B' bes 4 nn:aud. 41141a pan re 110411)141)1,411.1441. II' Il., 11 IC;

MapnoviÁaltbe bond ,mn nre

ñanah:ni Ins ISukMmB1'vAnn, ev:,1:. w 1.. ere a.d.l:.gp. P. Pntrr.lpn uhi

n.aMe w Y".ra1u. wlR IIIF+ ankerl GeY pMinlaa a:a 4.v.AeJ ahv:nm.

BpS,Mlan. A &,..I ,l,n} ,h»kl Im ,.x. I ...Aug., b1,m. p1.Z.

a..s,n., III .nd:-. B

n ü 0A. Mvq in 4nl:mf,.:, .il In:mdlauAV ,1

11,Fv.e,Fv1.1aaxauv.':,..`Re fus a fen anales. I.tpna. 51 a1.!

,:xFc Mus pxn.dan,v,a nl Iw 1kí1: up11JU. Pieu mn ver. u. r:Ileeblkaal MAI..

Uv

AUTOMATIC AMPLIFIER SWITCH CONVENIENT ACCESSORY FOR YOUR AUDIO. SYSTEM

..'na rRSA.n

:rr

ee

n'lu.

rr:alfx'x n.nn rka ìa.

Fr.; Ilv u.r

.Jd

d rn rm... Irc er.nt n .Il. tlul :eRni.+ m de aWV Nigh p.0 eN lu Irg}.R

TI: frMner ...rim, eluln n: :M uvr a Ik .: c

ry. Pr

R 'I

Idr

:WPC, N I

:I1 dFr Wv b Il;IDA e

' LI

;IP I, SOI

t.v .In. Ì vy:xae a.rwI

µAT IRdtrq :'u+ ar :En cirnr.l .104-od . alv+M'1II,.

Ir!.^.r4lnrirnu:in. na WCU:c

tv rtioder k r . QI Ru:1 u WI ru.nl2 bIUu1cJ.Cu,..c..

ly:I.nrvnal u SOS w:.JJ :lanag: (11.

e.<IYr;.e rr, I:or.IU nun rnufa

1.1

1.

JiR ar

II

(S4uit llPSelMn. pcnlr. I)I Um,/r I)r as .+M, wnR : i,., x,l

II r 8UJ Iutkael..e. A h.J crcrrnM IrroRter Jx.PxnnuAlaJ)1_ul M

Inn:Ye G I . N rt J rk .:ire.Tv;le h..nryaeJi111r.

AI u the poeJVáQI. Por loll

,mlfxrr,.uvn.,r.3 TIrc

:rcrven+rc ev.nd't.n nv:ow MW ...win," nxt vsmaller. ramre

ea lrc rho lima MW ng

6F RUv.arlreIl,eJ n::` Rit var h.IF-.M rVr41ü. y). etal.rakv.i II.nÌ R:rirnfmal Witch,'

crocks M1rwydtre irprover .i Illo

of k¡eu..r: n IF AMMO d r:n x v.

r eiSça: Ql. rJrn,évJ

rll ë mire [ ue Mon yld

JiJ mdleia a.,vet wl.rr

I-ral.

Cwpwsl Rel.dlen. O'Mrs IN rnn rr d

R lr n r:r`utdrde.xn romeowl K)I rku:çlr ' r ur.mA: ti rnn

ci n:,n ti d dindes ene sas

PARTS LIST

RCM

reJ :I

arslal r

n I tln Cltt< of ¢anAx eun, ea: nllrr

ekv all Peewee em a-noo t R.r..c JieJen pnte .anvWd in un:. ke.km. k.k. t ePup ~e" n li

1.e n ixe

JronaT# Wert .r,a We« :ea. ; renamed .a

e

r lien lu.1 M enn[uek Mt uufi,+

.1w:n a Sr.i:l. ay keep n..'e,.. .,w.. trig, 91 I eke

1

1

1 A +

edict a

unneel ennrr tleie61*nr..waA-S.

I:e.n

9 keel], leen- nlltwe .vd.r.:ln .

li

li

in i:

ti

e[r re aoano eexv oLS1XFM rnoee ,gr ,,X Maues

ele

a.e ..e:l elr

ten le I ïkle sr el,. Lu.e: e.

el

A COMPLETE SET OF

e,nen.ds onee eel

en en 7our

Ì.'.,.e..,.»......x........e.an.e

&:^. ....... a ee ......

113

Ekctronk Circuit Analogy Quiz BY liBBEPT P. BALM

nio!. c aid pawl p meow on O. Ink M.,' In the 10.1,1 anceivninal IC you can lot an c1.00. en: whkh zre clopicical 01

.1 ~

i i Wind Chimes

ELECTRONIC Wind Chimes

TIIC IM1 21 \(, SOUND OF ir SUf.I \9ER BREEZE

THROUGH YOUR AMPLIFIER SYSTEM

i I BY .101.1 S. SISIONTOH. JR.

wlfllllt th :AR Aarl

lialgr ,

re:lrrn.xrlrii.lum..nlnr.r_u uAim.ll.nula.uilAirrc nlml rl.xinl.

. , Wry.Fuar4r. Im,unu,rwa. rynr1M,

.narrr TAa rnynra n1.4..r. ,nahlnia .rnw:ud ari.d rFm- rrur Aw.rrr rr anA L. rrxlae n-x.r1e tlflt n

r ur ym :u r n i.AUr, n fl1ö I) nd Nlx, 014, n.9;.A Ar; n.r. nM MIx rr arï l Irada. J,re AHnnrr nodnlnl.a-aning

r IIlay,.MSArf!A..aruhaphue.:xlxoi wrxremrr:Anrvivd Ìn u :ela<al..nlers,wa rl:i:il. arh In. o .WpWAin!Mlaav3trmrAUln'uuIjurr('.

w H:A.Por+wir.11 r wI.Ala.alxrnwv . Yla n:d ,:J n rJT w A r! rAn.. -Amid rl:,.rrk r4w

Iwrru.uWrlu ryuarrrrf.l.Y 1 .M

ru.L: y. rla .vnn1^ -n .' tr IuimilW C1:.1 1rhA a1 aJ rlwmyF , I . px, wrul A:a'eAa :.rrLn .d vv r Ilw vayylr _ ItlT wd

jhn

ÿ . ¡ r a

r h '

r y .

;

. M ¡

r n

x r ry

. r

.

M

u r r d c

, . r

r

r

4 :

, nr.tr.., uwnwn

^

n

SA,

.M.

lw

I

rJ . l.i-

.ol :

Ales 4tR u rlds 4 <L. bw dnd

4nrr,><r Irr.xMnnrvrM..nrA.nanrun.nxirAi. LiaJmr arme rAr In.a.l n.n.:r alvnaA,IIM!.Ir4r:uryrn::r.aArrgr. hkrl Y.wA:lw awoo M a nn e rlg:n Wr.lA1.ThT+

rtry4r} itafvvl . m . : ,,, n-.a .r I , r t.w lprwtn. r4xiwxr+f'dlyln?)'. r Ì. Ell,d E1t9: av,:Ì:lx, ryrv/TT air ..Ii. I& avl.n w :.ur ttulv 4 er.MaA' IAe .pZl. A vL laa nJkdlH'>,dMxlr aelr

TAr1Anra:dnl adlM i J+ Issbmm ¡r4u

.r Iry r4 xi1eM1 al+e w adlb rwnr,

(lÌ Iln..mmru ':w.A yu6r I m. ìT 'Tuia Ark rA:. ralNh r n.:n

Pa a m.. nç r1r9e rin FAa'x4an

wel '.ni`inun wrlrr411..:r.lAralariaryraargi.:lrr 4. IfieLen nora arxAleror wrcwr.

. ,j,4 xkb l x arAl :xla+wix

.,.i,¿, r..pr,na

gAs Ife.iaw flii. 115.~IrIGN.

ILFOILOMIC .NRIMEN7F11.3 IIANOPOR

a the sandtnn wattage genet, mqx Jima, in tint tinging mall., In eta, way drat. tarn Ii, tandt. nelt, 101 Ilor Ott sad Ma.. thrall. al tho mod Lamt iertraw. 111t trtrtx ti -t an outdo . t. Id... lat t....,. 4, Lager tban twvIld *an i..' pttnilde Inaante of On trlaixer thr than, Inerkites time

Assonblx wanneld, lettlatitpx

rs74:71tt .1711Tnt'et'attl.r in

boldt mtdtatt tlat to, ittnÁtl:r Iva a. part., i.t.t 14.111

least la,. (Arad. Itnntdt mar he atlatel using thn foll tire Lames sho. F, or putaxed frnm the so, IX, Nat. dat two IC boards tee utal tarp the

i it ho, mouth the gnat tmillit.Inants. while du *Oa to, voN- Was OF want,. the ciartat. Stewat tan mad 1,, art bow,.

attenda, 14 etch konid ........ lt xmitdafervxxl. Caws. de xdadte Ortintlytir wxwatots aad do- artow Axle. ...e.t.a., ',ling Ow tram, wr max wore that Iltet atv prowl,. ten-, At

:=1.1.rthttn'tt=1";:rrt.:X.I1.1,': II= 1Z! te11','"J":,7,27,4 axle. whtle wddr, than tn Xnee. Sane rt1 ther pat, ttn IV Ito, ste at. tx ob. n lw tut,x1, wad ti olda barXrw

Mu, the cort:amtwIt , the attwit Intaidt :Auer, Ow pale Otter, dan

krewst two Int totaal latann Ix. Oat at dot larpa Inetni ,t WU,

dte hapta in the part, inl,awa. Itaightto 1.191. .71S, U. tad raw' la., .F .... and ',At Oat

intatal thot t,ht trtnew dot Ima, nl naitta, ttrW. , rld/ It.

one Iradt a wen. ont,,, prow, www dettot, art tt: hora that It ant

ora tatol, ale httna.

wattralwtter Art Ittlt e Nut po. dtletwatt datradlet the, hot, the tom i.,nJ , dat Fa, al dn. own the RIX awn,. toletaw varratort ',la "ti.. wr fit ..Oated wive at

the lont ha, Male tare dud dew. wire. to fluwe, t. etwit to le twettetnadt

1!rt'ttant.V. and I Ilt x ratehtrat tart,. Orwo IWO hm, t. that ate lax leark worn ra

11. iiii putt.t,to,h,the. ha!,

Z:rmt:g.:;7e:'4';$41.!Irti= tit dot oarettentuing

ta pn, anatgl,

'lot Ow 10 Clard. ritadt maa, Ir

00 pads. ball Me.

aKTPONIC EXPEIMEMItr5 NASIDOOX

kt bon...onune was mounted M al the del.

tore Amolal m oem, cons .ee oop,c, wet, eenhcl conool,ockeem m mom 114. m honk,: dow Jam.

memumoval. t S- Sr, Ile a er, on, iMvvve omh real. fi

SIMPLE COMPRESSOR-EXPANDER

BY CRAIG MOH..

Jr ANT PROGRAM MATERIAL

euorial Pi .mk.1 I, LI., Jaao.1 tow., tm-d

1441

aly ti °Anil TT: Hiner ni

or .1 IV

Tin Andrei rwwiriAinil 'Hi. lion On 131

Wri, Sir Annie,: ICI a

PARTS LIST

.4 a*,

I onZe77.'"

. mote IV1.01 wt. :Ina Oa.. age M Pg4146

IA

ArSes

lin4A trim Ivol Jr:

PCI

44.44. V!1V444V.44 doe

'Mr aroat apniaea Olen.. a,

a ail,. F3 afar, agmmion Map. a pa...Lk dn. At , As Pi value is dn.

APpilintiOnn. Ann. iran In AIM r

bewtt Ine

Ispi Mk awl prAirp, Ani In And H runii.A1 wan,

H aaa.1 the qa.,

MI ...trials. PN -I A In Add ter,

nal 10 a iiptilAninnint rnivnvininn. BA using n nnatal anta

poulaa lor S,. afoul an Mt h. nu-

de... Tun ni !Hire rink H nun H inrinro qv., in pit nnw

Pin nArApAinnpirrinul rin4411434

MaRCaliC lanAtOa,

Direct - Reading

Capacitance Meter MEASURES FROM 15 pF to 10 ?F IN FIVE RANGES- PLUS OPTIONS TO 100 :,F 0V 00 10110000

Mosr .FcY.uu` I,m....Y. n '.M' ama ul0. .uJ bvta El'eJ ,,W on Irrr,., (i: .nl SS ,! ,.A,:ara. a.J

aY ,a XxJ b. .a.<. J k..Ca

ra.tinmç.r

4ue

..T

n .yr

.. rx

n

Wuq!nI.l Ih.dM.miner

a

i

rüaa 4,2,.,,2, pl IJ:,...t pa uaJ

ro,aw..n,..b2...Ewrsf2:ml 1: drforni n.tnmr..ulu,l..a...a.l ,ç;.n,n.,l'r!u. Bunt awl ,.,L.na,.aS..

nix In. Ir,lünb Ila ,!i,e1,..Jxç; ea>u. ..¡,.l.Ik '.', .,Fner.4 . 0. Aid, ncr xr.4v.ilrA!wr.14,..W:,,In .,lan.n,YFi.k.Aall.aaV..Jn,mW

rMn..u., pa:a f:a..,.ba ..:IL a.n4.l!aS:a Ixu móum., i, iv avJ .. ,bv..ak.!. -w ..J Iax-

rt. ..le ,Frnaaa . M.

a, Ì.nvJ J., Ilr II,.:, I3 VV 1 In "motel; . J Lr ,.-I rc_MfnF :Fn .E*s

'711" nln+V..a vnJY,..Taaf á1k4,

IFm IJ .I Iv ,an.mnJM aAmr awLJ ..:d nF, nrv x.I.Ar.Ju.l nim:N Y...bnu.4vm,,:akná41.:.! Kt "WI

!.l uk4.IFn ..II, 'an mJam a.V. Iw Ì+a x.l In. : VJxJvaia .lmti.i. n W. aIM:I IL:.nïb c M

mA. 9p Inar.A x+..,, anr. vr,y v .al. .+cR

XV. 41hb..b.I.nut!v,.l.r:,a.w. M.m'l:,(a. E.. .xn:.N a:,rya a

ynn t.L.<Wa,d .n!.lo-:L:4m r:.ryn an.E°: ., x. Y ,. n:f(I `,r

tan Po.

.,: (1 á,n+ di;? i) mVm.efa

nnJ I.fA 4' . J p 1

x,ImA,r O x W l! ..aV.Yp n llw wet J. ,,.AllilxMU mLe

. IxFAa ,Fe :rF I . A uA :r

Wa: .,li. d,. .YF Aaa! nu. Jirry,aY v.Ll ;Po

v, Vn MT',r w.4: +u i .rinMVxiIlt n MIS ervwd. ..aAYc,n1.;.1:/J sod /1,.1-A'r;nc IinM1ana.MMlrruano-yw,a.

V.Ii.:ixlYUle:dalW,u. :ma lle

í..e10. rIn a' 41A, amprr

arrriini, 121

=VA. Jñ1.zW

iú4.r

R1115 é .,.w..f..... v

..AWnoa-.tn.v.W^ .:r.VnN rnn<r <imn w eaarralry < h«<rwan{ nulPwba

A.:rv W r rMr:rH rnJJ2. xl-.n P1P I I.n rh+.rrl!nJ wn :Ma1.W:r ah<; Iron IN Law: In: , n2A r

a<dJv ral'Ara .MrJJlnr M.I N'A+ r.lm rl P.Ir:r a.rmiAr

nµr.Arn w'4 v1nnc+A r+nma'F rrr L^ !Pq:l.i r.ryil,m!ra, wait C'..N+w !IN. n3121 " l.: n!rl. i1 r. le. L.Jkr w.rM1+. R

M.R MvI:.rca. Pi .11..r.n. awrud, P.

..J.<WrGmPrvrnia: rJ.nAvrvP rJ.rror:rx<vA.aAwrwl<rmiaraJIgrrcM tau l.`aQnrYA.TAr run}. r.r,l. end rJ Lk, nreranpe.il tr. ku

,MrrJerwwrrW Avrlcv.JuvMae.r¡+ .: al.r.M.t..Prr. v.NAIJ.:N15.PCbaP9rx rUrablN:w.!ara III enIeH+cn.r+aroi I.n,,, .t .4,1.1,51.1111.1* QJ fron. ll',eAVpnPrnaralrM1Cunknown

22 fl.1101.11C 01.1111.111.1110.1001I

0,00 1.10 m MI lv I:w Inrm ol 11< alo,. Vk::l or II. r rFr n. I ryr¡alc. m tinRC.>aaa:u c.1 ,11.:

._:klln+ IIv rnner ndinç: Ic Sdcn high. rm. .nog fie c:.mr an:, a xJlh ak m

i< ta kn .M

Q íin ,fi.

nufi, I+ Ile F

¡mx rTh4eV!I wÌMDA..r.Jn :1.6.00.n is

a!ifir 044 k apn:FVfi Aa core... F:n .m Ah Il .. fio,n.aCt

:I. %rnn diode IJI, II !.:4 en l: .dn1 :r IaAn $

: 11,e

F l. ÌdnN LN., ::f:' 1100,100

001 al

1I n tar the A 14i. I

-la+:.cinl:?': sop: :l..nç}r It slMrndn.a:_. al..rl mld:m..: shunt rv r ..I n..Yl .mdo:riul 000, .n nr:J.in

Anl F:.a lv.,....I

:r<mnrnl :: o m-rv rn.

' .n.+: aa:ilnalnn

m a

r n 11

o. 3 wAac ,J:e wIl,:dae. rhn

1. M.mnon :Wn nn.v a:ul knurl Ilix I. N. vpn fi '

I ,i:n.

H S. ,010.0,01, Imemse 10m0100 (aims } ..fin rrai'ng rvd, .A.JA! aa}.:gv:¡I.n.In mMLrAln

rr.9R.h1.eaFioeald OAS ,.'nl tle 11 nrM1n mrl fir, r Remo, 010 rarmox

s n angl rnonrcl n -F Zla IAr nm14 alnn4l

Fmdrn ..n..Ir:nln. nao.qo.e 4 Ì.,.1.n.lawMlin,Ir:S.

:+Trr..rll.m

nnF, r ( G . .

11

.rr1n611

in0

n1mfi+: w':n .j ,Io0rüM:,a ,,.,1

n.m:ne

Jr .r:ä I

n ñ:v wN;:al .aya.,

II. m Alto,. noodle

x

I . 101-

- aMnook lFrc'nl nmJ, r Jwk n naTwak.0

aF.GxnJ a npeMl uliJbJn n fur o.:l pa:lxm Gnl .r1 oax'ron

D{haaa:l va:k>l: a rr annp ak:d.Fc.u1. awl,m Liao v :e1W wok. ;1 s. limo

pt. .: I;I' 1.a. Joao r d-aler p tle n NIIn..uJ. Il.n.

nIr::bJ k r 14:1. LN. 11r IW..W.G rann

eme. Cl..t.at.aa

J. Cnnmt aFr +:nkrcavu In I::uJu.A fH:at. !d ard 15.

Om

nY:kwü:pa14 ñem.henda..munvailrr Nan Ilr 11T.,bMa:b:.

Mal. owl PDX., M m.xnl aph 11

:.é 1'arGe ':n mgr noJ.nkm J II. :.eadk : weL .

vds

,Pnnl6 lWuaa

.qx

15i.v.ri..

Ina.ax eap'aama nek nrye kal: :J ImA:.çr

,ai:r:kllrm.

L..u. II:. . +y.lra rrJb: *J.ti:i..4t nJ I

Ira

? Pot .Jl:r:.J in :13 Ic n 13 : f- :r:l '

o.d:.

.._f.:n:ljt.I4nYt::tln. Iv boo plfiwYp.1: vwfJnN.'u1 Lho ,ndai+an. ngelnd

d Il33 : J::J he AII11 hl molar walon.

qr4r akxd.qt. at ..in4

xu.ra r

wryr u

r....;.r..r1,1 to.. aluval.

Im#.unllnrl4' 4inKo. ,Olor 1.

yr

I.0 end , ;a r".. a.

p le., .Ik¡mn1aM

no.vilr3 r:wA 5fI..IIIO+Par::l3 nldPp4'o

xgr .a ke p :uis:,rulFA r e:l+rx

p: I...+ u..rh t4 aÍnol Jh. P r' ni JIn i w: M a,Lr r. . .r .r all..c d.. LMpF aa.par.lan m.M

Owrdpdw'G.r.,wnaadpd,r.r.ahr. +.,dlf pk'. Cn oho oiJ.l: 5xill.ur +n33r hope, lépPV.10..1' woo .M d3:gr.IIJJ.:...u.xlJU..gQJuaQa. p ..:mm NI ro lM..prygvtum II o ' 33:11. b.1lv.. .JIa4e. andduna.dM.xkmann/1..nrr/J.1m 1M3.:..Udo{.a.n.xJ.rJnmrJimk

.Arq:.Mi. ,ñnl.xkvebe:i:y-M .Alll.Ilrl.p.lu..:a.:rJJv.ia.33Jladb _.. dot ...own; oil rul!rnl. u:. qq{b:J:n Iarl : a. l Inr. Lv:anu: Iln ..:.xNy 1n f:

4,1 a ur M u p, n.bddn. 4 laln

Iwe t.ary3axx i,yt a.rr.me. ampll.:=rJ]....ex.inkUv slu1'tnik'lefla.1m16rruIx.110.. pik.apr.v:u'apr.Jllmin K.dJI.1!u

k+a yw ax am.16aI an u+kr+anv ia:mnn ' Itplr-eh.:n3:34.{I.. ab mx.Jalb:q uliar IP pP. 1bneWe.:3.43333 any i:dkNiana o1'o1d:u.0 I:naxe MAn .{:{yK rr Ax hlon' 15 p1:. I.q{r:Ig Uf. I1 Cr MMakJ:.ar ..... :If Jts

Il hn úqw:a4J Lx boon .d¡Ma:aH for of Ho he Ife Iw!Jnv lanw,. Ix nplw I:u:;.v uryeitw.. tor Ibr IA.-, p.nu. ing V!.1lexxm:xLralk:pdnxlJlvo.+in Jureibef:.ßeu.voblu.epnlarty>. xr33.k met a.m1lkullwllvxab..alnu

I Cow. .a IPrI: enaIm K 1_ vnJ 1._ p tdl.. If 11n rfntit io no.,x+ulipG P. PrrkxNv OW Ilu aa.e aapveia Hut pryr33r, rm:.-e mudy RAmd .3}.

ineu4M.Jbn. ¡ :w?rhlr.:baaiuJ4rxlx4uU.u,a!:ru a o teed AiwuSltope.t4a1. rNA. 1

BY IMRE BORGENM

BUILD nns _ 010 AMPLIFIER NJ INCREASE SCOPE USEFULNESS

Fl lutn xIrn .0 . a.pJrr.gv I . 41 } ^ 1

..I.n.lbwlerrl,yr.ix w,l L+ .uÌ.leir arar w'v, ud

.l Mawr

ll

ó1n1 mMI \Ilh. n.

i1. 06nx'+i+l+10 lnaJyelnE

a1.1 Ibc II WnYf. Tn nq

ollau!i. :IaaM\it I.

-JyRI ;It: + Ìt\(ñ ,u r..,,

cry.A loi Il

IFÌ 1

'i; n.-r N'

eamqMw a Amplmar wltp n A p

m

:s xnpJ Ig

vrvn LIST

NI I

flMf ,,,-,17,,,r

rl'.% aM re ma,nr.n

Ipa Isefr .nn..rar. av:a. a1W..,vrsr ..... 14.mµ.a.ndiñ.vl.... }l

- .. u ... .... .... ...I.

r.rJ..=. pr w0-15,

In...

aa

r w . rrrr rrr.'ia., .4:r.11rg:

M my n011x..aMGhu

J aulaia a al inynaá, a a:nün M Joe xya Too. 1: oa,lae.v laya w nd.a IM Ire9aercy na AIM.o10

a,.-0n rvw .

pr ali,otiv i:anI^mñrrxlilv .dol r

rtn m.wA.rvr.p.q

oflMar!Wdn61 eh W IM prarali IM pain

'maid I. :tom du.-.rx ie o.n:a cerro on.n. s'o îi. it' woo Imla.aa4arkx'df.W.v1AlIM. empty=..lu'>n:m:llryll?.oM n.eau. :amp a:polo 5tl1L:1dep,mMn .a41l4:.alwrru116MrnY.:tr'IRVw

M goat and. Ila ..:+:adaunt Im as.lu:h a.ud. The opp, n f 04 k AAA a CaaLlrppOmL 1M pera IS,olMlyaran<1oáDflgaeariaMn .ve:.: M

acnn.ala+.miil.duanlfn'ailtduad .h.4Ldlanandalua.a..: IwpaM Ila:pmary..c Na . :n.alxa.Ilee rtdn

IM x anl o mir Mhln.a31" x 1.A-p:nealpaiolOM alunnwnts .avulotp n.M1irinq Ár ralne la.,d. Ta nnamn .w+x1. capar:

zoo HIEC110111[ 11.10110011

Th, Ir

no ,,/,

I¼ ,. 1, a , ,nsul.011, dp.

Du and 11 i1,1,1, pl

ICI"L

.711,11, , 2, :1.1 SI.

?

ip W.

pq, . . (CPA! :..., b, NI.

i"1.2n 464 oh de :1

1, .J4, pot .,pply pcdpil,.1,. pn2., if Si ,

"IN= WI,. I.

pp.1

h**'***.r..** *

127

y

Build a LIGHT PROBE

!b

ELECTRONIC HELP FOR THE BLIND

MY

:.l.tiw:,u ulri:.L`x AIAï.Ip lp...J,I:w 4 w:ç' Il::l::r ryol,c IEac

W1 rWtk rapiJ

Iwn fig,. +putt!. Io.1 lán..l toxiou IcAyl.at- 1!u ti or

pT

pMn1.

nnui :tI

PASTS UST

e 1. Output frequency at tor circuit determined ght MARE pc1.

...lir J y, k..i9F: Ili. drlru0. C

+..0 A!+l'I+:J.;n.: q.. Corel,uc

ad h

al

01 et, IA, n.ke, kal kr .+, wPn F.Ir ..c

Á, u e,.lÁ I +.v :mid I+ b 4: tldid:

a .:A.1" ..+,.,.. k1>a

km and Use.

ti

it

uti ,v.n,.. 1.

.ro, ..a . m+..,.n.wy

b : I.krger. 7itin. =..a e =,., in r

TUBE

03LLIINATOR 01 a

ANTENNA TUNER FOR SWL's

LOCOST FRONT END INCREASES SIGNAL STRENGTH AND IMPROVES SELECTIVITY BY CARL C. orzuleEUex

_an aull-

as IAM lo Olt NIIn1 nirh`r n haw.. 4ro,.

a wrA,.lnx¡Im c:lys.

, ¡.. wr'Ì.nl Irv`:LnYelln 1.

.:.la.i.- r? ix.o .. .. _.. _.._._ .. ..._. _..... .. .... u..IJn.

7177'73:1. n

:WLl: la

`lt n ia

.'pay.. veo YL.' .r.J. nx. .a e. .

nlx- n+Ìk` .

nla IIMÌm { 1. Prv 6 ry I : ryJ.

.yn.l _ N.1.1.1.

.ppIIL.: .Inln4.: i:r Jy 1n? r.JfÌn sl` tiro, TF

l nulo rvll i.;.n &4 t,

Ilnxl r.bn Iln . r.rJ!`InAiI..K

ñ I.wk m. ltw I..un w. Jn3.i4a151 u uwJ

M`

133

g--

11

Grault resonates as desired haeua.

J..or.nlnn w Ji. duh 111.4 ln

II..

In

1 ul' i J 1.

wf

1 1 Ilan In xd

am. l. Nllrar:l l.'.x..ry+M.xJ>,

MMI r (

;411..

,y,

CLICMCNIC HAM..

WILD AN ACCURATE BY EDWARD N. J. NIARGIARIT

DWELL/TACHOMETER INSTRUMENT SM1.71:::=1::::

beor,,u, io bong A me, 5,,sse Ole psi.A or Iwie xgsild, ntie:sals. L.

Osa. id Oa. pAisdals. vids, lu. dal too de dos OA. gitlissAvi it Oss. odd. IY,Ln ol rules

Aida doe, ale Ors ...A Losisnl Alssoly ilisposs JA,11. . 3(.131e SilLer d Males iluot dsvel e.wial Asa sonsiami Alen dA

sniminssit AA 11314 Melon. viol.. v. die ol dos is ollal . 1,113131111"1 , s.

oft, i.ed <AAA.. so. AAA astit brims .11 lidslado. -Ad slA."osit.

Owen Awl*. A sTeleal lodlio.

L contacts los issa

otods boos Ad bon. o 1,11,11

All ale 1,P411 1 cod G. diskilAssor no. pisIses

spas, sIsto ORA mAss onsol in the p.m, Is was ismslessed IA Ih ston.v and dis IAA

es:.:Art.71'4 nissilisi, AL.. ,,A14.lI AllG

sAti diad I, .1 ids GAP : Alsen

'AA AllAAI II

tA'IIAAIF .1 SIA.PP d die pap L insroAed :le APII

171711:11:Ar,..1.311.1 1110

figod op. net olol unsaid Isoils1 Adlaval.

'tnIrdssA:S AI do, gor 111.1,4.11 113, 1101111.A. ILA,,,-es As din A, is di., toopailidissl 11. ANA

fino 13.1111A 13311,1e AJ

sod, ran AIA, Le ....did sosd &Al

"Alr

.1-313L3 31.01113

sm

T

oovAder Mips 131

fig. 2. Black dispels of the doe..

is switched ito read daiell or olufenin.

air ea tolsiak !La, paalo that

gr., Mr.. MT coo. "ilk, al alai

m- cnpAc 1St port. 000'd asaeroo: pe., Mat COP: Tr

oo: ol nos oval.. onosidenilari

kI.-

I ilaa'a

Zareti'oi inita17.7 .7.,."T..."":17.1.7L:',".

ri..aollangla .15.. Toe a flaylSolmoroaIrr. le .1 li;ii-otoo.1.1,ale

FARTS LIST a:SO

Zr.f.¡"! .:;1147, 22;

.C,ONK MKT MET TUT HAMA.,

v M k rc. I.oXaç. .ati lux mial104e J Ih.

urcLT<. meJ I

aa.elÌ..: uwulaihe

ioce

.nu. Ilun 1..-:a:ar, a -:.M:u iuáAw.p..w.:l ..I,. :..

f'..nanin ile ..u.IJ.

: 'ny:nnìn. nrx.o{v

na:al JH'fa.nn'ter wix iWrl,. 01 mom.% 1,16I id Iti

:t..: 'Da wk. ab 5.1 a.h

aFwl oaw

SAS

5OV

I VI

on D sloyinder coOoe. To see

ellgs::=;:rn=

woo.; omni 0,otoolor

owl Q2 nod doonsto. o "loos,. n nu, (1, s owns N owl Thr who

chnos , ool or the issirresis on lo A,. T1 ohos o el

is ,Isho rohNeo 4 it sons anti hon. °V on at 3 h h ool veol Iroch, ohm, In,thet wolf hvoomos waveform .1. Ow NOMA.. 02;va, Pile Malt dillys,4e rhe 41.0.1asess worfor Thr mt. w , onosionn solotur of QS. ss 100

Tnnosslor Ci3 soli as Mr no. tau down Woo co oho SN as .ott ,roorl

lho slaw of Q1, Korn. the moms..

Invisor el Ow moist, from (SI n himool hs hte hot nor all ootl ont to tlo >3l.'kM me morons to

Inn ,tion n sr, ,Ilifossiohol )1,.1 to p-ovoh the ova.

Thr o slth o solooliner iel sod

OS. rows.: multhi^oes swernmed Imo Tr.r.144 w,th.

Q awl Q% dociog Q1 Iwits ,Istundll Ado osohnsot,

!'orl':s7(4

IS IA tho yahoo n lb, ,,apor pm,

orophloilo of 83 ...AK Dixie Or pon..,, nt

,,,nw "Wow, .1.. Elder 3h,m1 1>343s of C7

M. IX, C. ;IAA roeh polo. loon thr

^7'3' Art. , wOlrxion 044 the compd.-1w shown i Ion. 1 a tlo loWon

wono sm, Iss limonh csLInsto, I

11,Sor that. ssh II rmso ono tpar solo N suotth oat, lo swim,. on ...AM ao,son

so Ill ment winos of Min Ow sioost nrotlos wont h t,or Aso

In no, to who, rlitiormo ralon os G7 its.,lyza;;In. wale. tnn ,,'.&l

The do snlinose(Lwrs of FET ,1- terrosSal wft100 at,

Sigh ispor ieWlioco lo

134 [1.1011011., EXPRIMINTER,

IT.1'IM,:rav v aM< nram

M%Fa srM vaamJaal raa:xidun.Laml

w.e pn.2my <I.ra w CA. Mea.

;70:17: gN.nwrhnfrtr.Wrrrtrrr onx d ero dqrnnul nair

vnryrganiel. In vW A23 is u.-ad lo MIL awe rM

r1awa,.

a, Ì .1 Tahr

rwa lad wo

lriaM

.n rain, a I ,r

mïf is ,Mn e

M r smile ra

,xhn. x rC dJ' e k

11v rr.rbrvl paw. swill( mA , :la

= so a m..an ,a¢rdJ,.z

(xl, q: end (15, Ilrw oak I.

hors J

oo

Rat it won ilitonalos wc .NAVI ,

Av wdn:nl ryi:é mknae..Irr:Wrt naJ J h: n:i. rrA:riy: rht rntv tts4+ P:e IenlJy aMv W.:.:hl he hav 14wr .cdea, wa ol axi o.h The tl l wok :: towM ua:4

i'xllqlsürnrgive IMAr'cesen(d.

1m ti xa4e a nvcl w saber v lao' ur'i W hf f:wrm In pn. fie

u:oP wool wawa rpn maA-rg. Moak,

vwa.e.W met alrr.n,r nakr.

YlarJnan, Tln . ,fa:m .Im,, io

11. I

pa . d:I wan. lmrJ; r J.:.h.e tl.n.l. I!ry x

w ,,.J

A wd I1. l.. nv-Jw'I.FWJv..11.. rdnnF

dos Je:rJra.r va..Trm .:rr art. .v.

d p. rmd:A I r un.

Jray;.nvl

CWbraahan. f4dy rwa, .wlwt dv

iYçu,:Á .+i Iow r.n.a.r. IrAl..a: ahr1 .IL d -

.nl A:nB ua la LI

noul:

pon-Wad rM a: hn, J lll^P aw ¡VI nr adnanW ln wawa rIw IJhr,ak a44nah., Tlr X`.Irl,k:rl ,qui and áx. aT nn ammo. alv aJ:4..1. Nv> d.a1,,,d.ar .vur..uul pau.nn.

n 14 or,

k,a1 1i

voontoso. In. ,°14111 J Ow v -r wrkh ddrom ArÍn.

.. rh+,lr ara:Á.uuF L = sub Iiv4 and M Irrynrvv 1a

ira. I n k

1.n .Ihn,nl ah4m xxt n J v

- .:m.] raLMnlFnr. n*eFrw.rvr:or f :woo rlm Po

i,.,r. J+X r r:vnbi ..

135

Vefsatite IG Tinte

m a..a.a.er..nrl. ro raro neanrnr.

using apre I(.' oad Jan..narHrmeaen

ev wuiCw w. SCHOM

.In.l.ui.na.<I Trippa, tIe

.11 s oar J 'll pe i tl 1- lk 6 -1

Jw M 1 n U' <.

In± ak.l4wa.Arl MI .ñ . r'l6W.urydfW Ill l

J Owsv law, tiaJa< a.l

'an.l < a Saw. W II. . < JI _M

.._.1.M

.. TN

ukdlwrx:nM1r. » n ;Jr IT

IM ri r.y we In :Akan fiv :nM: µwaull'

cyan In lbeled by opening nonnnily

tad M1 01 te. Rel y d

web. Y,Y,ing ti, Yrk. Ob) n annally On-eneepiled. lime cycle in,

by C.10SMC neunen, °P.n switch. Relay ene,cized doHng cY.e. 1E) Re,YY ...Y.YuY de one,

Timing ;nibbled by opening ..YYM Relay energieed during time cYde. Rably norm. dy-myy.

g= Zry `4r.

R ond C fur emIng Intervals Irom 1.0 inlegOSOCOnth to 1000 new..

IrInr 40pon MMAAAME MairdEm

PARTS LIST

21: V.. ViVe2.17' .1171 alLT610

dlonydn 7,3P, .31

Davii 260:

NZ

Ay. I. dr.isions are Tilde by 'flan, tgpt.e R04I.P thrfluel .P.r*Son

MICRON, PRNIANIITS NANO0011

r:11-;"

Ml n nl l.wii.ei: observe pel2ri. on senlivonductars.

Now II works. Tl.r Isan :I IL. .-

Ip3 lI: M! I

F

iïins.R..!:Sl..ve,r. . ...

. na aaw,.

.nln, .y.w , n luv\i1,'i w,ur

11 :I,ib,d..:nl :rllw II.nol ,

l .I.,w l. ia:st,..n `x i: ,, : Irr ,Q

.ni.r 1,1 .á+r

ir .qn.TI: .. I..alnn ,. :,`'d.:. hNi n. AM as: A.1

Thu la:ymlwm4Ab,u.d:vm iw,wv....á: ,m:...'t,al cum, w au.nr mI x:a.

Conslructlort .,e..n, IM4 mild

N:. al.. rd:.n nF.r._ :hrxlwnl !n 3.1,1 ;

.:_.._. içle...:l.l,.nlaa

NOW... understanding more about Mere can be es easy as listening to your I avorite recording&

Stereo Review iS SSTS, .SSOSSCS '",'°7711111 new set of room-Moue mermen to non you sx¡ssnd your uncler.Slim0.9., mus..

. .

SPECIAL SCHOOL/MO SIMON OFFER

SIMONS [31411.1.1111, SANCSDS5

KEYLESS SYSTEM OFFERS THREE OPERATIONAL MODES

BY HUNK J. INELSI

wTv av:tieC

nki,:

k, ryry+u.iailu:a tel.W.IJ.upJ... t 111,1,1: nm only N, .vli

'I`II:a,au',L,u.

n ..4lL.+ uWi.k.

u rinlu,Jt a .ak de:

a:+ularllu.';Ilr;.luk k

..al .ibanaluf Inau

::AL:.w l .rywm..

11 Au

u r lo. f uv l J.

11

goitt AM

M In roolo T

m .r,.Y W

".17 .

.la.J

PARTS LIST

Haw II Nor. '.1,...n1:,,

Ir .'

rc l. Al 1 1d f.. w-1ti ,p: ^ u.l In

!l' m,n l OA u. 1xHü

::1i1u1/41,1%

",.tiµf 1\1.0 Io. monk.; viH, I3:1 k mM

pvd. IFV eu m Iwm ,o. ;:tan*". .J' l,. t.,tmnnnrl 1 Hm.igF 11. IN. %1 W, fn. and Ow rrkFle ...delay marnN. Al, m 1r11

.Mm IW .vmJ k ççS ,M o d sAUle.i.i.y of ,M rk nor IW!r ..J ya. zwitA, ,u ll rk. .. W,nmz ú

d rmnme+M rM rurnm sill F. x,pyl.J M tM wN16m k,rto IMm,Ji PtsdOJ. .Son M rM Lunnv to., of dot unn

d AUppsw:mc.IMMaImrnvw brvm:n H A. umutt k:.Jwr c. M .ma

m11

L m M

r.lktu. o áw . w É eMm nJ d LL

Mmr ....Lao úand, Ilw..wm.IW orto nuu mM 1inni

, o IMmS1, m aavw

mod qlüsy c. ,ire. HmmA, Om

Icon Nr. II tern., ö ú rHmu.1W la S

Ivn4 Al Ik. Mulm of KJ F vocr,ssul. Afoot MI a.mó IIw ,Haurú M Kl ap.v m J,..mr,yi.e K, Iu.uM au ll..ö.u an] Ale kwm M k1. rt--61 the lunm of Kl tools ¡akart 1..aHLI. in ,.aw,.ta Ac.. "H'461 g%3, Ow uM., .d l'U'u L.alm. Soo zM Iwrn Solt. ,nmJJrWv s-admL do. n.JI up,W ditto.

sul.I M'ukw ?

s.h mmvom wt:l lbr Jow ú flood r,. Hun ,F KI. Belay KS lvmw locked k w,W IM zonk<IS ól Kt moto n,

alwm rvo.k R. tt+maalz e and ?

m.N !.R.Har. Aft. Kt uuJ am

e,wepianl. %1.i11 opnme aknr S0 woods h.moot.: L'^^. If KI 6 still an, zl,e %J

boxer wilt On. ow ksrpirsp.asol swen

Mobs Of pftveres owsdisip bark, frons 466666:66 hon 86, yarn E1.6666i

Om of molars. Isatier, bkoinp drusking inkisab. 1.0..k. Ill pox... dos

a6.6 Ike arming susibis is bowed Mode ni ,estorrs rosibuts of . buns i. Jost., sorge *Ism desonswwiarsl.

boas Ike ilia, island its 17,0 wok alleinalos soli., of 1.1,5 wk. owl

aswilisra kativii ohm. of N.4 va:h. Whoa aubliart loam strikassl sip lo

ibtl erente bobs tau Lattviirs is less sItin ifte I 5wskli Go. sow. DI and NI AI SP vo., ansilisly Irsilio .J1 sloop. .6 :Arno tke talk Law,. I73 Vfinwitl.r,

simixownerd elk*. rI/1 awl 017:

kola aliminim pima rta alias barb Ow sockets for obis. KJ awl KJ Polish Pi

ounals I «al will No. 10 wire.

Inots1101100. Ilaks Ow al., lox s.

sifts Web is in different beraiwo kowad

To kw die Wien. winos e roc Fl awl kw. on Ow stuns ssak Jaw

dui bris in be ebinged Ms, sior0a woo Ono townie. Wier, to di, brasSIXF

owillo on the balk, skis, ilos

PICK YOUR OWN CHANNEL FREQUENCIES USING THIS SIMPLE DESIGN METHOD

CIIA ':,rAlwA,xOalLeat.rn -rlti.vL..r4:a-rm

' ñ.`,.;;,irii.. . áLl,l..nC.:x91NamnNÑnÌIix ,.

Now ,arTM' 1vM nl ,r 4,q. ,oloi or, inçlmm.n±FIA'..:rN(' ('«...... rda rn .var

Ir..lrA

,,.,nR,a Mc iNr+r:

FILTER CALCULATIONS

Awne fz q, vy_ _>cov, n. = z rIa.

V I,-12]-101:0.003 vnél(xx.l3Yemal

n-ry. Jb'(I.:1001 .

INel/n. au _ar_s3s,lm,

Oa.. 0-,

M ,,I

.Nn: r!ruirnuFxil 'I+úii 11 rl,x I y rilir..x.N lek'N.+

.I+.P..' ..e ,1u.. r.i. .1,1.n,1

u nx .(. 1x+ .n'A wr,

m , ,

PMTS LIST

Circuit paPP iS:ma a :in: :: W,

eh .vc Mr P1 Ìm,aa v'ninne I.-. r<'SÚ Id mr O° :.u:ù :a l'osa 'Iho

PM should Poo a:Rk:n 110 u. vinç to qr..ae.,'an:p to be na.l. If krno aiS :IÌ.!Intti ÿ d ll, IYlnlnur lú Fr

Agnspl. For

ñv

lap. 4u:L. I n Lavo u:ñu «J w .,ra i;aLuI(M ,-o

r.k:Ja+m.Llu ,L ' aM .v v ilol a pi 4, Ì+n. iSLaJU'am,s

ila..d

P :.1::,:a,iM_,l,F,i; au ño nlr:."m..,.u., cl. l.s..anî cs,iTn,

.v:.pM. Mu. ,:e e,..: na sol la I

Ilz.cd411e.Ilno.al si'xtr-:.tr oapsoaf ago 1,r,.a.a.i.Lnl..:J>,L.,i

ppnalim, P . i AF, .1

a:ull,çç :l ..A n.t"1.+,IITUta.LN_:n,:.

.: I.arn em:ni. II d..i..d.n<c.4c lama ç:l nA ha, ken do.

:e In +Saaw. vim: n

i::.r.11a.Mrni k+Mm f.d:

II.+Ylnn .nena n'a:: anJw.v IL I:d .vL:on k

mul lulApo inM;n 1:ilainla: ate d ,:.i

d, o

il. rrmMa::av.

Imp Pow. ti 11:,o11 tor Imo.: :. oval lu dip ao Aulolos spoboogr al pnMnoaec

, ilo...

'a4P'aPlrÁ,

a NJÇ 'irnnSen ntalaa lox .d r u,hl :I .m

mok, arn. ,+F .11 aping k:m as+rd r:I Iry d .. 'noi.i;urlt:vF

°d.ì :., d:, lrora: vr T.il.I:JA. ñ.: r Mn:r: 4Ma1. k

I :h I:xul I ,, + úki,cn .,. :..:...:.

I,:®

3.11

Tr:

n,.Jv i

eéputxúlnoÌCdcrorlMpwérJO an. Inxe n, 2

iND A MN Dli

81' MICHAFL 5. ROBBINS

Learn to use this [totes, eatrerurry lrnr.,.o.r.er, h.Fir

mrr,r;,an:-,...1,.Irr r:..

'"iri ,ir.:'mtid.an1°n

.r.pura ,:J. p.U_ a.n,ru:rg.rr .0 T a.Ar, ,.,, vr .,. .:

L,,.0 ...

r q,are ..r J .aW 15 .d:. f\\IQti - Icr .a: :F. igad.

wrlllt'.1 aMll,~'J,w

u:Pw eF=.r.r..

},tAY, wirN Mmd. r rr:. 3Ir}IJS. Olmp Oper I: J.

'I:uln u lie:rl.ltarl Ir...r.ra.u. du

}tON'Y,'. Iw p lrl

IItiM, ulir .em IiWe pay,. A.:dW l:ü5AÑ5 Jnrm arad rb: nap da+a. la.nr in, anijpá l: p Ixa rurawrx:u:d

Astu. rMr.waJe,,!ww:r. pl.xl' J An4 ñ.:r .

or A :r{b o enek m a aay.r rlxA Pr v.:MrM %MNfC¡ Aer.v r:}N1911nN..rc.:rLra1JM1M,w d»AL

LlNRIIr'ryr.w^r ,Mdex.rxl Ile. rqxnnM Ara olnpnl,u

Ira

Fig. Circuit includm

pula tr w:

o

P

Isna a S.,ML1ow.aonL,nla,n°e;5;, 4 PARIS LIST

^_'r;ienosdar, o-.nrneo.ISa P"<o

,., afa Laawan. svvs e«...-.....:a..r«

Léúa.wl:::':.L.+...,.... LSO ,..r.

lp1 .4 Wwl Ai1

IAA

1 Idq7I ..112.11 EtiouLL e The usI dn+n in DA. 2.

Ifrn aM rl'ta.is mn,uweLa.LL RI .wd fI. Iam ,M 15 illo .aWhlu. IirvlAm bere 4n,An :M , : a1n. Ih.1na Mr M Inc LED .,Áy i,vSwnn rI go, off n,MAiydY +np. to (»Duo Rio L dv .dnrs prolo .,.nnn ç wdd.aA.

ér7s.l :ñ ñT.'. mm wm Ialnal

IM : 7.7.1

rs

Ut 01. <aAmn @t. ova. to da agw naLw.

h WIMP.. aM1M: rennin ti Of Ill. LED wad. (pin Si kAmwaJ to Don

aur iub PI. \4Ir. ns-nslh . txs N.n. hlla wrl.n SI is asn1 pi.,t-:.4,4!x11 to Do oscillator nM It d..r.a,, Il.,aa1

k IIm1+F n Is.6 .ryiarce. ellellA, AM IS 411. nAlnwl 1

,wpped .w IM .maa+.lnlo.r Is4.k hl- ., dìP¡I iI n.l rexL«L Sirc.Wwn.wlo,

s2 lg.. DI no ror.aWisg IM. LED +i. ton. na.<..wl. fli0 ,dnmmian osto

00 fVV.-

-r. 4,5

LIi _a

ar;:r,ton7=cf,oztn.,:=.

Single- Filament Tail Light Converter BY MARVIN DOER

Mrs,190 WXd9xa' nxn N::tlrr l:nd lY N :,:d N. el:. N. a,t1rMW:LMM.xlina,..x,A,ie :.I:raier..i.'l..eywl::lut.:.:dM

Nr. the ...+y ktnn 2.l2Fr1 Irv :J,^,Alnail,/ll ics ..:nM.rrcs .nr::r. nldxk.

uwil!.d la mot miter im, .iaa.,. , nla!k.l 1.4 ila r.:.l Iwnr oat. wMlmr aw J:n±.rMamrn ma. IrçM v, I10aa. the . . y,.:alr, r 4A.,+.:

ayrlile a. 1.:1 aul Ir.. I,çl i,.r ... wait ll..0 lgl:Id, un, ut.v. ka.Ma.. ami n Nvl, a ayril Iln.xi;, i. lad I.di k.n1.,J I:aIA P,aa :mA:al.n

. z,al di.h. w Ih. N:xk.'.trl..

1Tr mamma- rmm..knw lnrn,...M Ilia IxAl..rwv.( Ile Na,t..I,Ma.. o..v- mac :A..á.:n..,x.raYa11., Damn re ó 1 dMa.i.a;.;Niadl a n., m..a..

i.k..arl.,.r.;y..:,l.mma, 1. ñÜ;.`,.i.,, na w. A.x4.. u,+.,..I. í..,.M N. a I - ,. .a.ai ,ndN. I In.,, T..», Ika maa. .! M. nANd...u, d.x+lx I.:ñ.á -I. n . `ro.i". .:xa ti,aar ., ,la n.H. IàM,

nl iwmix:,vw ,In Naf.rr IìPM.. ' a cn.. V,..1 r).e 1,24, kit I..:d.. awl Inm ila .. lall 1. LA..x.d, aril 0:.

ä:w,lr"n:,.:aee u ...,..Nin iw:.. NA.' IipM. y.::.lr:, AA nrllina.. Ow black. dark, a : trIf

11 +

1 Inx.. :rc,dsdy Omagh :4d: aÌ.

WM. +lw<'.irNirul at..l .x Wm.... .f..y Ill I. 1n xd-Iln uJh, Igi,ia

p:N: ¡} . A IaIIFNW .. L'G.6ry,. .a, Mdi.'* _`.,,.,^m. ;;. á.;:l., n M,.

,.d.,,.

ihr 1:1n, should Iw

mr I:.L,a.:: u:i vxlá

n,..,e ,:. 4a:,, ua .4a,:nNml- °:;;:;L.:1al.ra

d, af INr .Im .n .,. ì ml..ie abrn . Mk

Ef,SCni[wrGS, I.Vc

11 1,.

I1 , , r \

_

-__--- ,

"4 a

,----- -

111 sav one tang /or Mures-De, no problem do birthdays and Cadst....

ELECTRONIC

EXPERIMENTERS

HANDBOOK

WINTER 1975

ADVERTISERS INDEX

=IL tic N.M. NU..

NI. IN M.O.

I iN

TEST YOUR KNOWLEDGE

OF SEMICONDUCTORS Irt 951.

I. HIT retrains steady regardless

Zit:Jr& rals.

LI7surakZo:'.7t:rtn77s'aralelodrnr:r lave 2=" etre:.1.1:rlaslyTert'lleTT.n:':rp"?:.

1;11..l.e Oil raise 4, Vela and :lane, tv.aiel (re nsi,tot higla and goad ehalaCIVielk. ri nigh sfir:;a7e

'<rime (el 'nest ci,or far z

Coruna. Lite Alm

r=s= Iref 1=0'"

C.5. 1.5115.: 4,551

N.5 OM, seteleave syndrel fur: 10 1..1 /0 SCR (el KS (10 New Inelistv

Bak. WO sri.001 3p1 makkal aonal INN

7 i.,%

x rt ...with CIE's

r" Electronics

You Learn to

Make Money

Laboratory! Now your can learn Electronics by performing

more Ulan 200 practical,shill.protming

experiments...with authentic industrial

components...at home ...in your spare time.

.r. CIE:.": ° ro'"

The "NEW LOOK" 1975

LAFAYETTE RAOlO ELECTRONICS

CATALOG

SAVE ON EXCLUSIVE LA FAYETTE PRODUCTS PLUS THE BE ST MAJOR BRAND NAMES

ITaT1HE ryGAT lI OG St RMLL OaWa

PypN111FGUFU'TpUUg PaODUUTs

FUa Fis

RENO FOR 1;

TODAY!

NEW!

NEW!

NEW!

free