Basic HTML Version
Flashlamp Circuit
I
POWER DRIVER BOARD
I
J102
F111
Power
J125
I
I
B
+
I _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
J
Flashlamp
Black-xxx
Red-WhIte
The microprocessor toggles the output of the 74LS374. When point "A" is low, point "S" the collector of
the 2N5401 transistor is high. Once point "S" is high, point "C" the collector of the TIP102 transistor is
low. When Point "C" is low the flash lamp is grounded through the transistor and the flashlamp turns On.
When point "A" toggles high the circuit shuts Off.
Special (General Purpose) Solenoid Circuit
I
POWER DRIVER BOARD
Drive vee
Power
B
68n
Flashlamp·
or
Call
2.7Kn
=
Blue-xxx
J107
I
Red-White
1OOll'
50V
The microprocessor toggles the output of the 74LS374. When point "A" drops low, point "S" is high. A
high at point "S" causes a low at point
"Co.
When point
"C"
is low the coiVflashlamp is grounded through
the transistor and the coiVflashlamp turns On. When point "A" toggles high the coil/flashlamp turns Off.
*
Tieback Diode is not used for flash lamp circuit.
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