Electric a.c power switch controller and d.c. power supply metho

Details Electric a.c power switch controller and d.c. power supply metho Electric a.c power switch controller and d.c. power supply metho

1987-12-10

1989-10-31

Salce, Patrick R.

Electricity: power supply or regulation systems

Input level responsive

Phase controlled switching using electronic tube or a three...

323324, G05F 500

Patent

active

048780103

ABSTRACT:
A.c. line operated controller which provides solid-state switching of a.c. power flow, together with producing a supplementary source of low d.c. power for operation ancillary circuits. Operation is obtained through electrical connection that is in series with only one side of the a.c. power circuit. Device utilizes a thyristor for a.c. power switch control. A small residual potential which is devised to appear across the ON-state thyristor is rectified to produce the low d.c. power level. When the thyristor is OFF, the line voltage potential across the thyristor is reduced and rectified to produce the low d.c. power level. Turning the thyristor OFF is attained by current starving of the thyristor gate electrode by a gate shunting semiconductor switch. Device is shown to be utilized in "two terminal" apparatus producing time delayed switching of a light, as a controller for producing the illusion of a flickering flame from an ordinary light bulb, as a light flasher, and as a "touch-controlled" a.c. power switch for lighting.

REFERENCES:
patent: 3499168 (1970-03-01), Dinger
patent: 3940660 (1976-02-01), Edwards
patent: 4253045 (1981-02-01), Weber
patent: 4270058 (1981-05-01), Schornack
patent: 4300090 (1981-11-01), Weber
patent: 4336464 (1982-06-01), Weber
patent: 4438501 (1984-03-01), Weber

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