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Watt-hour meter with digital per-phase power factor compensation

  • US 6,377,037 B1
  • Filed: 08/01/1997
  • Issued: 04/23/2002
  • Est. Priority Date: 08/01/1996
  • Status: Expired due to Term
First Claim
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1. An arrangement for generating a phase correction in a measurement device, the arrangement comprising:

  • a phase correction circuit operable to insert a delay into one of a sampled voltage data stream and a sampled current data stream, the delay effecting a phase adjustment between the sampled voltage data stream and the sampled current data stream, the delay having a delay length based on a delay value;

    a processing circuit operable to generate the delay value and provide the delay value to the phase correction circuit, the processing circuit further operable to obtain information identifying one of a plurality of line frequency values, and generate the delay value based at least in part on the obtained information.

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