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Apparatus for providing cost efficient power measurement

  • US 4,713,608 A
  • Filed: 03/06/1986
  • Issued: 12/15/1987
  • Est. Priority Date: 03/06/1986
  • Status: Expired due to Fees
First Claim
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1. Apparatus for measuring electrical power consumed in an electrical system comprising:

  • means for generating at least a first signal representing an ac voltage provided to said system and at least a second signal representing an ac current provided to said system;

    first multiplexor means responsive to said first signal and said second signal, said first and second signals appearing at the output of said first multiplexor means in a controlled sequence;

    first means coupled to the output of said first multiplexor means for converting the controlled sequence signals at said multiplexor output to corresponding dc signals;

    second means coupled to said first converting means for converting said dc signals to digital signals; and

    means responsive to said digital signals for providing a third signals representing the product of said first and second signals, said third signal representing the apparent power provided to said system by said ac current and voltage signals.

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