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Power control circuit

  • US 4,473,784 A
  • Filed: 03/14/1983
  • Issued: 09/25/1984
  • Est. Priority Date: 03/14/1983
  • Status: Expired due to Fees
First Claim
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1. A circuit for controlling the power delivered to a load from an alternating current source comprising:

  • means responsive to the alternating current source for developing a full-wave rectified reference dignal comprising a succession of half-cycle segments whose peak amplitudes alternate between first and second values;

    control means for generating an adjustable direct current control signal;

    means for developing a pulse width modulated signal having a first level whenever the level of the control signal exceeds the instantaneous level of the reference signal and otherwise having a second level; and

    output means responsive to one of the first or second levels of the pulse width modulated signal for connecting the load in circuit with the full-wave rectified reference signal developing means.

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