Electricity: measuring and testing – Measuring – testing – or sensing electricity – per se – Transient or portion of cyclic
Patent
1978-10-23
1980-06-17
Rolinec, Rudolph V.
Electricity: measuring and testing
Measuring, testing, or sensing electricity, per se
Transient or portion of cyclic
324 51, 324133, 340650, 340663, G01R 1900, G01R 3102, G08B 2100
Patent
active
042086272
ABSTRACT:
An alarm circuit to monitor a periodic signal source for an occurrence of a short-circuit condition detects the entry of the instantaneous periodic signal magnitude into a predefined window bounded by an upper and lower threshold. The duration of the entry is timed to determine if a short circuit has occurred.
REFERENCES:
patent: 3184729 (1965-05-01), Freedman et al.
patent: 3774109 (1973-11-01), Janycky
patent: 3937937 (1976-02-01), McVey
Bell Telephone Laboratories Incorporated
Karlsen Ernest F.
Rolinec Rudolph V.
Steinmetz Alfred G.
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