Calculate the duty cycle for the given average power

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Reference no: EM13254680

Pulse width modulation (PWM) is used to control dc voltage to an

electric heater. The supply voltage is 12 Vdc, and the heating element is modeled as a 1 resistance.

(a) Calculate the average power delivered to the heater when the voltage is switched at 100% duty cycle.

(b) Calculate the duty cycle such that the average power is:

i. 72 W (half of full power). (The answer is not 50%.)

ii. 30 W.

Reference no: EM13254680

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