Basic HTML Version
Special (General Purpose) Solenoid Circuit
DRIVE
POWER
Power Driver Boald
Pow.r O•••• r Boald
• ·Playtlold CiIaJ~When '-Ior
coil driver ony (._ +6OV or +20V). "uNCI lor .uNlI'I1'
driver ••• playtlald drc:Ut below. Tieback Diode IInot uoad for "ashlamp drcult.
The microprocessor toggles the output of the 74LS374. When point "A" drops low, point "8" is
high. A high at point "8" causes a low at point "C". When point "C" is low the coiVflashlamp is
grounded through the transistor and turns On. When point "A" toggles high the coiVflashlamp
turns Off.
Flashlamp Circuit
DRIVE
POWER
Power O~ver Boald
Pow.rO •••• r_
Boald
To
Transfonner
Secondary
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
TI P102 transistor is low. When point "C" is low the flashlamp is grounded through the transistor
and turns On. When point "A" toggles to a high the circuit shuts Off.
PARTY ZONE
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