List the advantages and disadvantages of pwm

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Reference no: EM131199801

Using sketches, describe how PWM effectively varies the average value of the modulated signal. Explain how one could obtain the following by PWM:

(a) A zero average

(b) A positive average

Indicate how PWM is useful in the control of dc motors. List the advantages and disadvantages of PWM.

Reference no: EM131199801

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