Hand-held ignition voltage tester
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United States of America Patent
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-
May 28, 2002
Issued Date -
N/A
app pub date -
Sep 10, 1998
filing date -
Oct 7, 1996
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A hand-held ignition voltage tester for detecting voltage on a spark plug wire in an ignition system, such as a distributorless ignition system. The tester includes a housing, positive and negative power cables and a capacitive probe for capacitively coupling to the spark plug wire. The capacitive probe generates a voltage signal which is representative of the voltage on the spark plug wire. A plurality of voltage level indicators are mounted to the housing to form a bar graph, with each indicator corresponding to a selected voltage level. A measurement circuit is coupled to the power cables and the capacitive probe for activating the voltage level indicators in response to the voltage signal.
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