High voltage A.C. to low voltage D.C. switching interface circui

Details High voltage A.C. to low voltage D.C. switching interface circui High voltage A.C. to low voltage D.C. switching interface circui

1976-10-29

1978-04-18

Zazworsky, John

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307247R, 307291, 307DIG1, H03K 1700, H03K 3286

Patent

active

040853420

ABSTRACT:
An interface circuit for coupling a high voltage AC source to a bistable circuit for deriving a low voltage DC output signal at first and second voltage levels dependent on the condition of a switch. The AC voltage is coupled via the switch, a first voltage divider and first diode means to the set input of the bistable circuit and directly via a second voltage divider and second diode means to the reset input of the bistable circuit. The voltage ratios of the two dividers are chosen so that the bistable circuit is set and remains set when the switch is closed and is reset and remains reset when the switch is opened.

REFERENCES:
patent: 2909675 (1959-10-01), Edson
patent: 3493787 (1970-02-01), Russell

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