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Receiver apparatus for three-phase power line carrier communications

  • US 4,668,934 A
  • Filed: 10/22/1984
  • Issued: 05/26/1987
  • Est. Priority Date: 10/22/1984
  • Status: Expired due to Fees
First Claim
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1. A transceiver for use with a three phase power line communication system, comprising:

  • a receiver having a first input connectable in signal communication with all three phases of said three phase power line and a second input connectable in signal communication with a neutral conductor of said three phase power line;

    first means for coupling voltage signals from said three phases to said first input;

    second means for coupling a current signal from said neutral conductor to said second input;

    means for forming a first voltage signal from said voltage signals from said three phases, said forming means being connected in signal communication with said three phase power line and said first input;

    means for selecting one of said first voltage signal and said current signal, said selecting means being connected in signal communication with said first and second inputs;

    means for demodulating said selected signal, said demodulating means being connected in signal communication with said selected means; and

    a transmitter having an output that is connectable in signal communication with said three phases of said power line.

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