Basic HTML Version
FlashlamD Circuit
: POWER DRIVER BOARD
Flashlamp
Black-xxx
Power
+
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
"CO
the collector of the TIP1 02 transistor is
low. When Point
"CO
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 purpose) Solenoid Circuit
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I
I
POWER DRIVER BOARD
Drive
vee
Flssntemp"
or
Coil
Blue-xxx
Red-White
100J.lf
sov
Power
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 coillflashlamp is grounded through
the transistor and the coillflashlamp turns On. When point "A" toggles high the coil/flashlamp turns Off.
o
Tieback Diode is not used for flashlamp circuit.
INDIANA JONES 3-9
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