Basic HTML Version
High Power Solenoid Circuit
:-powER
DRivER
BOARD - - - - - - - - - - - - - - - - - - - - - - - - :
Drive
+SOV
I
J113
J130
I
PlayfleJd
I
or
I
Backbox Coil
I
Violet-xxx
F105
J107
I
I
I
Violet-Yellow
100llf
SOV
Power
1
I
The microprocessor toggles the output of the 74LS374. When point ·A· drops low, point "S· the collector of the 2N5401
transistor is high. A high at point ·S· causes point ·C· the collector of the TIP1 02 transistor, and point
·0·
the emitter of
the TlP36 transistor to drop low. When point ·0· is low the coil is grounded through the transistor and the coil turns On.
The coil shuts Off when point ·A· toggles high.
Low Power Solenoid Circuit
: POWER DRIVER BOARD
Drive
PlayfleJd
or
Backbox Coil
Brown·xxx
I
Vlolet·Orange
100111
SOV
Power
The microprocessor toggles the output of the 74LS374. When point ·A· is low, point "S· the collector of the 2N5401
transistor is driven high. A high at point ·S· turns On the TIP102 transistor and causes point ·C· to drop low. When
point ·C· is low the coil is grounded through the transistor and the coil turns On. The coil shuts Off when point ·A·
toggles high.
Twilight Zone 3-8