Induced nuclear reactions: processes – systems – and elements – Testing – sensing – measuring – or detecting a fission reactor... – By particular instrumentation circuitry
Patent
1986-04-08
1988-08-09
Karlsen, Ernest F.
Induced nuclear reactions: processes, systems, and elements
Testing, sensing, measuring, or detecting a fission reactor...
By particular instrumentation circuitry
376215, 324158R, 324 73R, 340644, G21C 736, G01R 3100, G08B 1900
Patent
active
047626631
ABSTRACT:
A self-testing contact closure test circuit and method in which invalid logic states are artificially created in order to simulate a switch malfunction, and thus to determine whether the testing circuitry correctly identifies the invalid state. The system is designed to be used with switches such as those incorporating form "C" arrangements having two pairs of contacts which under normal circumstances are in opposite states.
REFERENCES:
patent: 4516076 (1985-05-01), Pillari et al.
patent: 4583013 (1986-04-01), Gupta
patent: 4664870 (1987-05-01), Hager
patent: 4692298 (1987-09-01), Coradi et al.
Cook Henry F.
Sutherland James F.
Weisner Ronald J.
Abeles D. C.
Karlsen Ernest F.
Nguyen Vinh P.
Westinghouse Electric Corp.
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