Basic HTML Version
GENERAL ILLUMINATION CIRCUIT
ipOWERDRIVERBOARD----------i
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Drive
vcc
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J120
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G.I. LIGHTS
IJ113
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Power
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c
J115
S.B.
When point "A" toggles low, points, "8" and "C" are high. This turns on the triac and the desired general·
illumination string of lights.
BLOCK DIAGRAM OF GENERAL ILLUMINATION CIRCUIT
!Pioyfield -;;; Backbo~
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G.!.
Lights.
Up to
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18 bulbs per string.
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r -
--;';ower--;river~~d-
- -
l
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__ J
6.3 volt secondary
1-------,
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Power Driver Boord
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5 volt secondary
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r---------,
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CPU Boord
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1-+----,--1
Microprocessor
1---,----'
Zero Cross Detection
Circuit
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3-10