R4

DC 7

Q 3

GN

D1

VCC

8

TR2 TH 6

CV5

U1 NE555

C1

10nF

C2

220nF

R147k(FREQUENCY)

R45.6k(1k TO 10k)

"N"

S

D

GQ12N7000

R2SEE NOTA

12

J1

SUPPLY

+9 TO 15 VGND

123

J3

SERVO MOTOR

CONTROL+ 5V- 5V

123

J2

POT

C3100nF

10k

BY:DATE: PAGE:REMOTE CONTROLED CAPACITOR FOR ANTENNA COUPLER

SERVO MOTOR CONTROLER

12/10/20f1frv@sfr.fr

1/1REV: 1b

DOC N°: AMATEUR RADIO

C4100nF

R3SEE NOTA

VI1 VO 3

GN

D2

U2 7805

C2A

220nF

VR1

NOTA. DUE TO C2 & VR1 TOLERANCES, REPLACE R2 & R3 BY VR2

NOTA. C2 & C2A USE +/- 10% GOOD QUALITY STABLE IN TEMPERATURE

VR1

C5100uF

REV 1a: REPLACED C5 100nF BY 100uF AND REPLACED R2 & R3 BY VR2 (10k 10TURNS)

VR210k

CUT THIS PIN

L'AFFICHAGE DE LA POSITION SUR L'ECHELLE GRADUEE EST SEULEMENT INDICATIVE ET NON ABSOLUE EN % DE CAPACITE.

POSITION DISPLAY ON SCALE IS INDICATIVE ONLY & NOT ABSOLUTE IN % OF CAPACITY.

PLACE POTENTIOMETER VR1 AT 0% OF COURSE AND ADJUST VR2 FOR 0° (-180° DEVIATION OF SERVO)PLACE POTENTIOMETER VR1 AT 100% OF COURSE AND NOTE SERVO POSITION AS 180°

AFTER THIS, PLACE DRIVEN CAPACITOR AT 50% AND TIGHTEN COUPLING FLECTOR SCREWSWITH VR1, PLACE SERVOMOTOR AT MID COURSE (90°), AND KNOB INDEX AT CENTER OF SCALE (50%)

AVEC VR1, PLACER LE SERVOMOTEUR A MI COURSE (90°), ET L'INDEX DU BOUTON AU CENTRE DE L'ECHELLE GRADUEE (50%)ENSUITE, POSITIONNER LE CONDENSATEUR A MI COURSE, ET SERRER LES VIS DU FLECTOR

LM317

5V

35 x 17 H 20

NOT USED

ADJUST LM317 FOR 5 VOLTS (-0/+1V) OUTPUT BEFORE SERVOMOTOR CONNECTION.

REV 1b: ADDED SEPARATE LM317 BOARD

5040 60

%VARIABLE CAPA

302010

0 1009080

70

LM317

5VIN