Electricity: measuring and testing – Plural – automatically sequential tests
Patent
1983-08-11
1985-10-29
Strecker, Gerard R.
Electricity: measuring and testing
Plural, automatically sequential tests
324 51, 324133, G01R 1914, G01R 19145, G01R 3102, G01R 1512
Patent
active
045502870
ABSTRACT:
A hand-held instrument for testing wire circuits. A tricolor light emitting diode is utilized to indicate the existence of a signal in a data bus. The diode displays different light signals to indicate the presence of either alternating or direct current, the polarity of a direct current, and continuity in a circuit. Voltage in the circuit is indicated by a variation in glow intensity of an incandescent lamp. The instrument is adapted for servicing and troubleshooting circuitry on board commercial aircraft, including both data bus circuits and other alternating and direct current circuits.
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Barnard Delbert J.
Strecker Gerard R.
The Boeing Company
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