Hand-held ignition voltage tester

  • US 6,396,278 B1
  • Filed: 09/10/1998
  • Issued: 05/28/2002
  • Est. Priority Date: 10/07/1996
  • Status: Expired due to Fees
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First Claim
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1. A hand-held ignition voltage tester for detecting voltage on a spark plug wire in a distributorless ignition system, the tester comprising:

  • a housing;

    an input terminal for receiving a voltage signal representative of the voltage on the spark plug wire;

    a plurality of light emitting diodes (LEDs) mounted to the housing, each LED corresponding to a selected voltage level;

    an input circuit comprising an input coupled to the input terminal to receive the voltage signal, a measurement output and an absolute value circuit coupled between the input and the measurement output; and

    a measurement circuit coupled between the measurement output and the LEDs for selectively lighting the LEDs in response to the measurement output.

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