H-BRIDGE WITH PWM Circuit
This circuit drives a motor clockwise /
anticlockwise via a pot and reduces the speed to zero when the pot
is in mid-position. The current is limited to 200mA and the voltage
across the motor is less than 6v, but the circuit shows the
principle of Pulse Width Modulation (providing powerful bursts of
current to the motor to create a high or low RPM under load) and
both forward / reverse RPM via the H-bridge arrangement.
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