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CIRCUIT AND METHOD FOR DETECTING ZERO-CROSSINGS AND BROWNOUT CONDITIONS ON A SINGLE-PHASE OR MULTI-PHASE SYSTEM

  • US 20140132246A1
  • Filed: 09/18/2013
  • Published: 05/15/2014
  • Est. Priority Date: 11/14/2012
  • Status: Active Grant
First Claim
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1. A circuit configuration for detecting zero-crossings and a brownout condition of a power supply, the circuit configuration comprising:

  • a zero-crossing detection circuit for detecting zero-crossings of single-phase signals and multiple-phase signals;

    a brownout detection circuit;

    an isolation and digitization circuit connected to said zero-crossing detection circuit and said brownout detection circuit; and

    a filtering circuit connected to said isolation and digitization circuit and outputting an output signal indicating at least the zero-crossings and the brownout condition.

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