Speed Control Of DC Motor Using PWM

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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. The simple Pulse Width Modulation PWM DC motor control eliminates these problems. For More Details: - http://www.studybazar.com/speed-control-of-dc-motor-using-pwm?search=speed%20control%20dc
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