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Apparatus and method for PCB smoke and burn detection and prevention

  • US 7,109,722 B2
  • Filed: 06/10/2004
  • Issued: 09/19/2006
  • Est. Priority Date: 06/10/2004
  • Status: Expired due to Fees
First Claim
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1. A method for at least one of detecting and preventing burning of a PCB, the method comprising:

  • configuring a first comb array defined by a plurality of first fingers at a first potential;

    configuring a second comb array defined by a plurality of second fingers at a second potential different from said first potential;

    interlacing said plurality of first fingers defining said first comb array with said plurality of second fingers defining said second comb array embedded in a substrate;

    disposing said substrate with the PCB; and

    detecting a rise in leakage current between said first and second comb arrays indicative of a breakdown of said substrate,wherein said interlacing of said first and second comb arrays is coplanar and includes a layer of epoxy and fiberglass above and below a sensing element defined by said first and second comb arrays arranged in a sensing plane.

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