Abnormal voltage detection circuit

Details Abnormal voltage detection circuit Abnormal voltage detection circuit

1977-12-07

1979-11-06

Caldwell, Sr., John W.

Communications: electrical

Condition responsive indicating system

Specific condition

58 23BA, 340663, G08B 2100

Patent

active

041737563

ABSTRACT:
An abnormal voltage detection circuit includes a series circuit of a resistor and a capacitor coupled across a power source by means of a switch, an inverter with the input terminal coupled to the junction of the resistor and capacitor, and an R-S flip-flop circuit with the set and reset input terminals coupled to the output terminal of the inverter and a manual switch respectively. The R-S flip-flop circuit is set by a first threshold voltage lower than the threshold voltage of the inverter, and reset by a second threshold voltage higher than the threshold voltage of the inverter.

REFERENCES:
patent: 4041691 (1977-08-01), Chihara et al.

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