Pulse Width Modulation Quiz

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Questions and Answers

What is varied in pulse width modulation?

  • The amplitude of the analog signal
  • The active portion of the duty cycle (correct)
  • The frequency of the pulse
  • The inactive portion of the duty cycle

What does the term 'width' refer to in pulse width modulation?

  • The inactive portion of the duty cycle
  • The active portion of the duty cycle (correct)
  • The amplitude of the analog signal
  • The frequency of the pulse

What is the amplitude of the constant amplitude pulse varied proportional to in pulse width modulation?

  • The amplitude of the analog signal (correct)
  • The voltage level of the pulse
  • The inactive portion of the duty cycle
  • The frequency of the pulse

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Study Notes

Pulse Width Modulation (PWM)

  • In Pulse Width Modulation (PWM), the width of the pulses is varied.
  • The term 'width' in PWM refers to the duration of the pulses.
  • The amplitude of the constant amplitude pulses is not varied, but the width of the pulses is varied proportional to the amplitude of the modulating signal.

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