Electric element breakdown detector

Details Electric element breakdown detector Electric element breakdown detector

1985-09-20

1987-03-31

Rowland, James L.

Communications: electrical

Condition responsive indicating system

Specific condition

324 51, 340641, 340652, 340661, G08B 2100

Patent

active

046546456

ABSTRACT:
An electric element breakdown detector includes an electric element (5: 5a: 106: 132: 172) connected in series with a switching element (6: 6a: 116: 116a: 171) which define a series connection. A processing circuit (40: 110: 174) produces a control signal to the switching element to control on and off operation of the switching element, so as to control the current flow through the series connection. A comparator (10: 119) is provided for comparing a voltage at one end of the electric element with a reference voltage produced from a reference voltage producer (12: 121, 123), and generates a result signal representing the result of the comparison. The result signal is fed to the processing circuit. The processing circuit detects the condition of the series connection by the detection of combination of the control signal and the result signal.

REFERENCES:
patent: 1239795 (1917-09-01), Klipphahn
patent: 2547011 (1951-04-01), Jacobsen
patent: 2625596 (1953-01-01), Hines
patent: 3588891 (1971-06-01), Porter, Jr.
patent: 4127887 (1978-11-01), Tanaka et al.
patent: 4354182 (1982-10-01), Frey
patent: 4454503 (1984-06-01), Konrad
patent: 4521769 (1985-06-01), Dudeck et al.
patent: 4538106 (1985-08-01), Anderson
patent: 4575711 (1986-03-01), Suzuki et al.

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