Electricity: measuring and testing – Measuring – testing – or sensing electricity – per se – Frequency of cyclic current or voltage
Patent
1978-01-30
1979-12-11
Strecker, Gerard R.
Electricity: measuring and testing
Measuring, testing, or sensing electricity, per se
Frequency of cyclic current or voltage
340653, G01R 3102
Patent
active
041785428
ABSTRACT:
In an electrical or electronic system employing numerous remote devices such as relays, lamps, motors, etc., requiring periodic testing to determine their operability, a monitoring circuit is connected to the output of a test signal generator to provide an indication of the operational integrity of the remote device without requiring a separate dedicated electrical lead for monitoring the operational integrity of the remote device.
REFERENCES:
patent: 3649913 (1972-03-01), Flieder et al.
patent: 3689830 (1972-09-01), Caldwell et al.
patent: 3836854 (1974-09-01), Wehman
patent: 3973184 (1976-08-01), Raber
patent: 3991362 (1976-11-01), Blair et al.
Lynch M. P.
Strecker Gerard R.
Westinghouse Electric Corp.
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