PWM Motor Speed Control Using Class D Audio Amplifier

This is class D audio amplifier circuit that is used to control PWM motor speed. This circuit has two advantages for battery-powered portable devices. First, this circuit produces much less power dissipation than do it’s linear cousins. Second, it enhances battery life. Here is the circuit: A potentiometer (R2) is used to generate a variable DC voltage. To match the […]

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