Self-cut-off power switch for a remote controlled electronic equ

Details Self-cut-off power switch for a remote controlled electronic equ Self-cut-off power switch for a remote controlled electronic equ

1976-10-04

1978-07-18

Pitts, Harold I.

Communications: electrical

Systems

Selsyn type

340310A, 343225, H04M 1104

Patent

active

041018788

ABSTRACT:
A make-type contact of a relay-type member and a manual switch are connected between a commerical A.C. power supply and a load circuit. The manual switch is turned on only when it is being manually actuated and turned off when it is not manually actuated. A winding of the relay is connected to the load circuit such that an excitation current flows therethroiugh through the load circuit or a control unit, and it is also connected to the control unit for receiving signals from a remote control unit. When the manual switch is turned on through manual actuation, a power is supplied to the load circuit or the control unit to excite the winding-type portion so that the make-type contact is closed to hold the power to the load circuit even after the turn-off of the manual switch. When the control unit, on the other hand receives the signal from the remote control unit the winding-type portion is deenergized to stop the supply of the power to the load circuit.

REFERENCES:
patent: 2305862 (1942-12-01), Gilliver
patent: 2942249 (1960-06-01), Paull
patent: 3840871 (1974-10-01), Eguchi
patent: 3971028 (1976-07-01), Funk

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