Page 124 - Judge Dredd

General Illumination Circuit
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POWER DRIVER BOARD
Drive VCC
G.I. Lights
J115
S.B
xf------<I b-----J xl--_:------____I
Power
I _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _I
Block Diagram of General Illumination Circuit
lpow.;-r
I Driver I
I Board I
1-Playfleido;-I
I Backbox. I
I Up to 18 bulbs. I
I I
I I
6.3 volt secondary
5 volt secondary
Zero Cross Detection
Circuit
Power Driver Board
Microprocessor
CPU Board
When point "A" toggles low, then points "8" and "C" are high. This turns On the triac and the desired
General Illumination string lights.
Judge Dredd 3-10