Page 126 - JackBot

HIGH POWER SOLENOID CIRCUIT
ipOWERDRWERBOARD---~ov-----l
1 • 1
1 Drive 1
1 1
IJ113 1
1
1
1
1
1
1
1
1
1
1
1 Power _j_ 1 L - J
Red-Brown
COIL
Violet-XXX
J107
+
10KO
The microprocessor toggles the output of the 74LS374. When point "A" is low, point "B", the collector of
the 2N5401 transistor, is high. A high at point "B" causes point "C", the collector of the TIP102 transistor
and point "0", the emitter of the TIP36C transistor, to drop low. When point "0" is low, the coil is
grounded through the transistor and turns on. The coil shuts off when point "A" toggles high.
LOW POWER SOLENOID CIRCUIT
ipOWERDRIVERBOARD----------l
1 1
1 Drive vee 1
1 1
1 J 113 J 127 1 COl L
1 X 1-- 1 '-------
1 1 Brown-XXX
1 1
1 1
1 1
1 J107 1
1 + F104 1 Red-Block
1 1
1 100mf 1
50V 10KO
1 1
1 Power _ 1 L - J
The microprocessor toggles the output of the 74LS374. When point "A" is low, point "B", the collector of
the 2N5401 transistor, is high. A high at point "B" turns on the TIP1 02 transistor and causes point "C" to
drop low. When point "C" is low the coil is grounded through the transistor and turns on. The coil shuts
off when point "A" toggles high.
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