Basic HTML Version
Flashlamp Circuit
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Floshlomp
680
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LS374
Red-White
2.7KIl
Black-XXX
Fl I 1
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15.000}.'f
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The microprocessor toggles the output of the 74LS374. When point "An is low, point "S" the collector of the 2N5401 transistor is
high. Once point 'B" is high, point "C
n
the collector of the TI P102 transistor is low. When point "C
n
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
r--p-C;W-E-R--O -ivE-R-·-B-OAR-C;--··········---·-·---
-·· - · ···--·-·--···-
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DRIVE
vee
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Floshlornp«
or Coil
680
2.7KO
B l ue - XXX
LS374
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The microprocessor toggles the output of the 74LS374. When point "An drops low, point "B" is high. A high at point "8" causes a
low at point ·C". When point "O" is low the coiVftashlamp is grounded through the transistor and the coiVltashlamp turns On. When
point "An toggles high the coiVflashlamp turns Off.
"Tieback Diode is not used for flash lamp circuit.
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