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Secondary power meter for quarter-cycle power measurement and invoicing method

  • US 8,260,695 B1
  • Filed: 07/14/2010
  • Issued: 09/04/2012
  • Est. Priority Date: 07/14/2010
  • Status: Active Grant
First Claim
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1. A device for measuring quarter-cycle load on a full cycle power circuit, comprising:

  • a single-phase power source connected inline to a first power meter provided by an electric company;

    an adapter coupled to said single-phase power source which outputs one-quarter cycle alternating current to a transducer;

    a voltage pickup between said single phase power source and said transducer coupled to a voltage-measuring device; and

    a current-measuring device coupled after said transducer;

    a second power meter recording said measurement of said quarter-cycle usage and exhibiting a difference in power usage between a measurement of power by said first power meter and said measurement of said quarter-cycle power usage.

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