Circuit for producing a series of substantially square wave outp

Details Circuit for producing a series of substantially square wave outp Circuit for producing a series of substantially square wave outp

1977-06-17

1979-05-08

James, Andrew J.

Electrical transmission or interconnection systems

Personnel safety or limit control features

Interlock

307357, 123148E, H03K 520

Patent

active

041538501

ABSTRACT:
A source of alternating current signals is applied across the inverting and non-inverting input terminals of a voltage comparator circuit through a series bias resistor. Electrical circuitry including a supply potential source and the comparator circuit output terminal is effective to direct current flow through the bias resistor in respective first and second opposite directions while the comparator circuit is in the first and in the second operating conditions whereby the polarity of the potential generated across the bias resistor reverses with each change of operating condition of the comparator circuit.

REFERENCES:
patent: 3666970 (1972-05-01), Abbott et al.
patent: 3801830 (1974-04-01), Boyer
patent: 3991733 (1976-11-01), Harris

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