Basic HTML Version
High Power Solenoid Circuit
POWER DRIVER BOARD
Drive
+50V
J130
I
Playfield
I
or
I
Backbox Coli
100111
50V
I
Violet-Yellow
I
Violet-xxx
2.71<n
Power
The microprocessor toggles the output of the 74LS374. When point "A" drops low, point "8' the collector of the 2N5401
transistor is high. A high at point "8' causes point 'C' the collector of the TIP1 02 transistor, and point "D' the emitter of
the TIP36 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
+50V
Playfield
or
Backbox Coil
Brown-xxx
100111
50V
I
J107 :
I
Violet-Orange
+
Power
The microprocessor toggles the output of the 74LS374. When point 'A' is low, point "8' the collector of the 2N5401
transistor is driven high. A high at point '8' 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.
Judge Dredd 3-8