Basic HTML Version
Elashlamp Circuit
: POWER DRIVER BOARD
Drive
Flashlamp
Black-xxx
+
Red-White
Power
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 flashlamp is grounded through the transistor and the flashlamp turns On.
When point "A" toggles high the circuit shuts Off.
Special (General Pumose) Solenoid Circujt
r - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - ~ -
I
I
POWER DRIVER BOARD
Flashlamp'
or
Co;1
Blue-xxx
Red-White
100
11
1
SOV
Power
The microprocessor toggles the output of the 74LS374. When point "A" drops low, point "8" is high. A
high at point "S" causes a low at point
"Co.
When point "C" is low the coiJ.lflashlamp is grounded through
the transistor and the coillflashlamp turns On. When point "A" toggles high the coillflashlamp turns Off.
* Tieback Diode is not used for flash lamp circuit .
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11IEREXT 6EREIbJ"DR 3-9