Pulse Width Modulation DC Motor Control


Posted on Aug 2, 2012

Often, people attempt to control DC motors with a variable resistor or variable resistor connected to a transistor. While the latter approach works well, it generates heat and hence wastes power. This simple pulse width modulation DC motor control eliminates these problems. It controls the motor speed by driving the motor with short pulses. These pulses vary in duration to change the speed of the motor. The longer the pulses, the faster the motor turns, and vice versa.


Pulse Width Modulation DC Motor Control
Click here to download the full size of the above Circuit.




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