PWM based dc motor speed controller
0:15
YouTubeElectronics Education
PWM based dc motor speed controller
This circuit uses a 555 timer to generate a PWM (Pulse Width Modulation) signal for controlling the speed of a DC motor. The potentiometer VR1 changes the pulse width (duty cycle) while keeping the frequency nearly constant. A narrow pulse delivers lower average voltage, making the motor run slower. A wide pulse delivers higher average voltage ...
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Pulse-width modulation PWM Applications
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