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SPECIAL (GENERAL PURPOSE) SOLENOID CIRCUIT
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The microprocessor toggles the output of the 74LS374, When point "A" is low, point "8" the collector of the 2N5401
transistor,
is high. A high at point "8" causes a low at point "C". When point "C" is low, the coillflashlamp is
grounded through the transistor and turns on. When point "A" toggles high the coil/flashlamp turns off.
*
Tieback diode is not used for flashlamp circuit.
FLASHLAMP CIRCUIT
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The microprocessor toggles the output of the 74LS374, When point "A" is low, point "8" the collector of the 2N5401
transistor, is high. Once point "8" is high, point "C" the collector of the TIP1 02 transistor is low, When point "C" is
low, the flashlamp is grounded through the transistor and turns on, When point "A" toggles high, the current shuts
off.
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