Switching circuit for controlling various appliances

Details Switching circuit for controlling various appliances Switching circuit for controlling various appliances

1978-10-13

1980-12-16

Zazworsky, John

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307293, 323 24, H03K 1772

Patent

active

042399874

ABSTRACT:
This relates to an electronic circuit which is designed to supply 115 volts AC power to loads of up to 550 watts for a predetermined time period of wide latitude. An "on" cycle is initiated by momentary closure of an external control line pair with a closed contact current flow of less than one half milliampere. The "on" controller may be located at any convenient distance from the load switching circuit and may be a coin operated switch. The electronic power control circuit is fabricated from discrete components including one integrated circuit installed on a printed circuit board (17/8".times.27/8") which is finally encapsulated in a hermetically sealed 2".times.3" module suitable for operation in a moist or corrosive environment.

REFERENCES:
patent: 3644793 (1972-02-01), Ilk
patent: 3745382 (1973-07-01), Hoge et al.
patent: 3808466 (1974-04-01), Campbell
patent: 3883782 (1975-05-01), Beckwith

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