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8/14/2019 tonepad_smallclone
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0
½
1
1½
2
2½
3
0 ½ 1 1½ 2
READY TO TRANSFER
LAYOUT
Heladito-O2Rev.1.Jul.25.2005
+4.5v
RATE
½Lm358
½Lm358
+4.5v
+4.5v
+4.5v
+9v
+9v
+9v +9v
+9v
+9v
+9v
6
5
7IC1b
.01 6k8
33k
1k
100k
10k20k
220k
1uFQ1
10k180pF
.0027
39k39k
10k
.0047
3k3 10k 10k
.015.0033 470pF
100k
Q2
39k***
10uF
A
D
EB C
2
3
1IC2a
5
6
7IC2b
470k120k
82k
2.2uF
Tant.
68k
47k
180k
1M
+
9v
AC
ADAPTOR
INPUT
+4.5v
+4.5v
3
2
1IC1a
1k
220k
.033
33k6k8
.011uF
22k
.047
Q3
10uF 10uF
10k
3
8912
65
144
7
10
12
11
2 6
4
5
73
1
8
D1
MN3007
12k
39k
D3 150pF
33k
CD4047
OUT
1uF
56k
56k
220uF 10uF
47
10uFPOT
CW
L a y o u t a n d p r e s e n t a t i o n b y F r a n c i s c o P e ñ a 2 0 0 1 - 2 0 0 5 ® .
A l l r i g h t s r e s e r v e d .
A u t h o r i z a t i o n f o r p e r s o n a l u s e o n l y ,
a n y c o m m e r c i a l u s e i s f o r b i d d e n .
P e r m i s s i o n f o r p o s t i n g / s e r v i n g l i m i t e d t o
10k-B0k-B1M-CM-C
3 9 k
39k
1 0 k
1 k
1 0 k
1 k
1 0 0 k
1 k
3 9 k
39k
1 2 k
12k 3 3 k
33k
. 0 0 4 7
47
1 5 0 p F
15 pF
3 3 k
33k
6 k 8
6k8
. 0 1
1
1 k1k
100ktrim
1kk
6k 8k8
33 k3k
56 k6k220k20 k
. 0 3 3
33
. 0 1
1
. 0 0 3 3
33
1 2 1 1 1 0 9 1 4 1 3 8
3 4 5 6 1 2 7
CD4047D4047
3 9 k
39k
Rb=Emptyb=Empty
3 9 k
39k
1 0 k
1 k
5 6 k
56k
2 0 k
2 k
. 0 0 2 7
27
22 k2k
220k20 k
1 0 k
1 k
1 8 0 p F
18 pF
120k20 k
180k80 k
Ra=Jumpera=Jumper
47k7k
82 k2k
68 k8k
4 747
4 7 0 k
47 k
4 7 0 p F
47 pF
.047047
3 k 3
3k3
1 0 k
1 k
1 0 k
1 k
. 0 1 5
15
OUTUT
+
1 0 u F
1 uF
+
2 2 0 u F
22 uF
+
2 .
2 u F
2 2uF
+
1uFuF
+
1 u F
1uF
+
10uF0u F
+
1 u
F
u
+
10uF0u F
+
10uF0u F
+
10uF0u F
D E P T H E P T H+9V9V
D11
D 2D2
A B C D E
R A T E A T E
INN
GNDND
MN3007N3007
L M
3 5 8
LM 58
4 5 5 8
558
Q33
Q22
Q11
0
½
1
1½
2
2½
3
0 ½ 1 1½ 2
READY TO TRANSFER
Schematic
(Depth pot mod included)
F P 2 0 0 5 F T O N E P A D . C O M T
H
E L A
D
I T
O
HEL ITO
10k1
32
Build the Small Clone circuit on this layout. The FET switching has been removed to use true bypassswitching. Layout shown with depth mod applied, see ‘schematic for depth switch’ for stock wiring.Pads A, B, C, D, E are for the stereo mod. Off board components except for the potentiometers are notshown on the layout. Trademarks are property of their owners.
8/14/2019 tonepad_smallclone
http://slidepdf.com/reader/full/tonepadsmallclone 2/2
Resistors
1 - 47ohm2 - 1k1 - 2k7 (2.7k)*1 - 3k3 (3.3k)1 - 4k7 (4.7k)*2 - 6k8 (6.8k)6 - 10k1 - 12k1 - 20k1 - 22k3 - 33k4 - 39k1 - 47k2 - 56k1 - 68k1 - 82k1 - 100k1 - 120k1 - 180k2 - 220k1 - 470k
Parts List
Pots1 - 1M Rev. Log.1 - 100k Trim.1 - 10k Lin.**
Capacitors1 - 150pF1 - 180pF1 - 470pF1 - 0.00271 - 0.0033
1 - 0.00472 - 0.011 - 0.0151 - 0.0331 - 0.0473 - 1uF1 - 2.2uF Tant.5 - 10uF1 - 220uF
Diodes2 - 1N914
Transistors & ICsIC1 - 4558IC2 - LM3581 - CD40471 - MN3007Q1 - 2N5087Q2 - 2N5088Q3 - 2N5088
Notes* Only needed if buildingstock (no depth pot mod) version** Replace with SPST switch if building stock version
Cap ValuesC1 - 330pFC2 - 50pFC3 - 225pFC4 - 396pF
Swpos/capacitancePos1 - 33pFPos2 - 100pFPos3 - 180pFPos4 - 330pF
The Math:-1 -1 -1 -1 -1
Pos1=(C1 +C2 +C3 +C4 )-1 -1 -1 -1
Pos2=(C1 +C3 +C4 )-1 -1 -1
Pos3=(C1 +C4 )-1 -1
Pos4=(C1 ) =C1
6
5
7IC1b
.01
C1 C3 C4C2
6k8
33k
100k
100k
1k
100k
10k20k
22k
OUTPUT2
1uF
D
3
2 8
4
1IC1a
A
Heladito-O2
L a y o u t a n d p r e s e n t a t i o n b y F r a n c i s c o P e ñ a 2 0 0 1 - 2 0 0
5 ® .
A l l r i g h t s r e s e r v e d .
A u t h o r i z a t i o n f o r p e r s o n a l u s e o n l y
,
a n y c o m m e r c i a l u s e i s f o r b i d d e n .
P e r m i s s i o n f o r p o s t i n g / s e r v i n g l i m i t e d t o
SCHEMATIC FOR THE STEREO MOD SCHEMATIC FOR THE DEPTH SWITCH
SCHEMATIC FOR CAP SWITCHING MOD
E
B
C
Use Ra=4.7k and Rb=2.7k and wire a SPST switch likethis:
This mod is for changing the value of the 150pF capgoing to pin1 of CD4007. Use a SP4T rotary switchwired like this:
Use the pads on the main PCB and wire this circuit:
The Stereo Mod requires a separate board. The original small clone had a depth switch instead of thepotentiometer, this gave two depth options only. The layout provides pads for this mod, just follow theschematic for the depth switch. Trademarks are property of their owners.
4
3
2
1
½Lm358½Lm358
½Lm358½Lm358
DEPTH
+9v9v
39k9k
10uF0uF2k7 (Rb)
2
3
1IC2aC a
5
6
7IC2bC b
470k70k120k20k
82k2k
2.2uF 2uF
Tant.ant
68k8k
180k80k
4k7 (Ra)
F P 2 0 0 5 F
T O
N
E P
A
D
TONEP H S T H
STEREO MOD LAYOUT/TRANSFER
Rev.1.Jul.25.2005
4 5 5 8
558
10k0k
2 0 k
2 k 2 2 k
22k
100k00 k
1 0 0 k
1 k
3 3 k
33k
6k 8k8
100k00 k
1kk +
1uFuF
A B C D E
.0 101
OUTUT
