Basic HTML Version
GENERAL ILLUMINATION CIRCUIT
iPOWERDRNERBOARD----------i
I
.
I Drive
vcc
I
I
I
G.I. LIGHTS
I
J113
I
I
I
I
I
I
I
I
I
I
Power
I
I
L
J
J115
When point "A" toggles low, paints, "8" and
"C"
are high. This turns on the triac and the desired general
illumination string of lights.
BLOCK DIAGRAM OF GENERAL ILLUMINATION CIRCUIT
I -
-;ower-;;river~oard-
- -
l
I
I
I
I
I
LS374
I
6---+------;f---+-----'.,Y-
--+----t---l
Latch
I
I
__ J
I
P;;;e~ Drive-;-
l
Board
fPia-;field ;- Bockbo;-j
I
G.I. Lights.
Up to
18 bulbs per string.
I
I
I
I
6.3 volt secondary
,-------,
I
Power Driver Board
I
I
,---------,
I
CPU Board
I
I
I
L
_j
Zera Cross Detection
Circuit
I
5 volt secondary
I
Microprocessor
L
_j
3-10