Page 140 - Tales of the Arabian Nights

Basic HTML Version

Power
I
I
L
J
Figure #1
,-----------------------,
I
Jl06
I
G.I. LIGHTS
I
I
I
I
I
I
POWER DRIVER BOARD
I
I
I
GENERAL ILLUMINATION CIRCUIT
r-~---------------------l
I Drive
vee
JI06
I
I
I
I
J102
SCI41
I
I
I
I
I
I
I
I
I
I
c
POWER DRIVER BOARD
Jl03
S.B.
L
~
G.I. LIGHTS
Figure #2
There are five general illumination strings; three like figure #1 and two like figure #2. When point "A" toggles low,
points, "8" and "C" are high. This turns on the triac and the desired general illuminationstring of lights.
BLOCK DIAGRAM OF GENERAL ILLUMINATION CIRCUIT
I----------l
i
I~";I
i
L
J
fPjayfield ;;-; Backba~
I
G.I. Lights.
Up to
I
18 bulbs per string.
I
@
I
OR
I"
Powe-;=-Drive-;=-
l
I
I
1---------
Board
@
I
I
I
I
I
Power Driver Board
I
I
I
(Q)
I
I
I
Triac
LS374
I
L _____
_j
I
Drivers
I--
Latch
>-
L_
__ J
I
6.3 volt secondary
L---t----
-
1-------1
,--------1
I
Power Driver Board
I
I
CPU Board
I
I
I
I
Zero Cross Detection
I
I
I
I
I
Circuit
I
I
Microprocessor
I
I
5 volt secondary
I
I
I
I
I
I
L ________
___j
L
_j
3-10
-l
I
I
I
I
_J