Heathkit GC 1197 Schematic

Page 1

HEATHK|T®

DIGITAL FLOOR CLOCK /
DIGITAL SHELF CLOCK

MODEL GC-1195/GC-1197 :' a ----
NOTES: :
1. ALL RESISTORS ARE 1/2-WATT. VALUES ARE SHOWN IN :4. COMPONENTS ARE NUMBERED ON THE SCHEMATIC IN THE E
OHMS IK=1000L FOLLOWING GROUPS: :
. 1-10 PARTS ON THE CHASSIS
2. CAPACITOR VALUES ARE SHOWN IN MICROFARADS. 101_150 PARTS ON THE POWER CIRCUIT BOARD_ E
201 - 250 PARTS ON THE DISPLAY CIRCUIT BOARD. F I
3. SYMBOLS: I :
D= LETTERED CIRCUIT BOARD HOLE. * THIS VOLTAGE IS NOT FILTERED AND MAY VARY GREATIéY :
- 0N MOST VOLTMETERS. THIS VOLTAGE ALSO DEPENDS N . l
v - CIRCUIT BOARD GROUND' THE LDR RESISTANCE AND WILL BE LESS IN DIM AMBIENT : |
'5 = CHASSIS GROUND. LIGHT. :
= I
O 3 VOLTAGE ** THESE RESISTORS MAY BE A DIFFERENT VALUE. I I
V WAVEFORM SEE PAGE 36 OF THE MANUAL. :
. . - I
7W/I7'W/W/fl/flfl/fl7/JV/ZflflW/M/7/////7W/é/////////////W/Wfl/////.//fl/fl/fl/W/fl/Wfl/fl/flfl/Vfl/IV/fl/é : RZI
......................... , /
g I 2 2 g : '2?
/ '1' E / I
T . ' . . . , , z / I
g ........... ........... 3 ............ i ........... .......... i ............ ........... Z :
x/ 3 : 5 5 E w} 5 f E <-j---+ 7-8V I
g I I i 5 1 "I: : j E // I
g 5 I I : I I E g :
,/// é ......... 1/ .......... , ......... I. ......... I; ......... ', ,..........,..,. H; ......... IE .......... I ........... g g I
/ j 1 .1. j 1 1 ¢ I
/ : ' J. : : , ¢
¢ .' j : 5 % I
/ 1 If ; Z 3 f. I
¢ ; g,- . 5 : ,4 I
/ 2. , I , , I I , z , l, I ,.:u,. , z z , .2, I , gut. , I , , I: / '
% I I f E a? L
% E I E E j / ----l
/ 1 J : Z 5 /
g 1 .......... , ......... , ..................... , .......... , ........ I ......... ; ......... é, ......... I, .......... E g
/ 1 '1' i 1 : /
/ E I; E I : ¢ .
é "I ; I g r- ---l
5 , .................................. ..................... I, .......... , ...................... , 0v I
14 ,,;,. : E I} I
2 5 ' 2 Z :
/ E g /
g I. ........... ........... .......... ,,,,,,,,,,, < ,,,,,,,,,,, ; ,,,,,,,,,,, ; ,,,,,,,,,,,, a ,,,,,,,,,,, 2 g E
é/flW/IW/W/M/W/Mfl/fl/W/W/flfl/fl/flfl/MW////////////7///fl///fl/fl//}W//7//7/flW/Wfl/fl/fl' :
2V.ICNI I
I

5M SEC/CM +--~

C704 TIME ADVANCE
$.01 FAST SLOW 26 23

240 VAC
WIRING

1/4'AMP

to
q

N

SLOW- BLOW

boob!

' . -

aLK-YEL
BLK-GRN
55:? C103 IC 101 -------------
$91 443-848
BLK~ RED 417 -301 1
I. am

4gI215 A

.1 Rio: 0
mar
15 K

q
WIFR1ING -nn---------------------m B

1/2 AMP

SLOW-BLOW

BLK-GRN

POWER
CIRCUIT BOAR D

INDEED LEAD

I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
:
V I
.'