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/[email protected]
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