Heathkit GC 1092D Schematic

Page 1

-HEATHKIT5

NOTES:

SCHEMATIC or THE
HEATHKIT®
DIGITAL
TIME-CALENDAR CLOCK

M ODEL (EC-10920

l, COMPONENT NUMBERS ARE IN THE FOLLOWING GROUPS:

2, ALL

3, ALL

100-199 PARTS MOUNTED ON THE DISPLAY CIRCUIT BOARD,
200-299 PARTS MOUNTED ON THE MAIN CIRCUIT BOARD.
300-399 PARTS MOUNTED ON THE CHASSIS.

RESISTOR VALUES ARE IN OHMS; K=T,DDU;M=1,0IJ0,000.

RESISTORS ARE 1]? WATT,10% CARBON COMPOSITION

UNLESS OTHERWISE INDICATED.

4. ALL CAPACITOR VALUES ARE IN uF UNLESS MARKED 0THER~

WISE.
5. $- THIS SYMBOL INDICATES CIRCUIT GROUND,
I). 0 THIS SYMBOL INDICATES A LETTERED CIRCUIT BOARD
CONNECTION.
7. 0 THIS SYMBOL INDICATES A DC VOLTAGE MEASURED WITH
A HIGH IMPEDANCE VOLTMETER FROM THE POINT INDICATED
TO GROUND. VOLTAGES MAY VARY t10")-.
8. * THIS SYMBOL INDICATES A METAL FILM, 1% RESISTOR.
9. *>I< THIS VOLTAGE IS 11,5 VOLTS DURING BATTERY OPERATION.
10. ALL THE SWITCH FRAMES ARE GROUNDED.

11.4:

WIRING OPTION: USE N FOR NICKEL~CADMIUM BATTERIES,
AND C FOR ALL OTHER BATTERIES.

12. ALL BOTTOM SWITCHES SHOWN IN NORMAL I TOWARD
FRONT I POSITION; BACK PANEL SWITCHES SHOWN
IN DOWN POSITION.

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