Sequential power distribution circuit

Details Sequential power distribution circuit Sequential power distribution circuit

1976-12-27

1978-06-06

Caldwell, Sr., John W.

Communications: electrical

Systems

Call station

250574, 340237S, 362227, G08B 1710

Patent

active

040939430

ABSTRACT:
A primary load, such as a conventional household light bulb, is series connected to a power source, such as is provided to a conventional household outlet. The conventional light switch is replaced by a circuit series connected to the source and lamp and draws relatively low operating power through the primary load. The circuit has an energy storage capacitor and a diode. A secondary load, such as an alarm, is coupled across the capacitor through an SCR (Silicon Controlled Rectifier). A sensing circuit, such as a smoke detector, is also connected across the capacitor and connected to the gate of the SCR and triggers the SCR upon detection of an alarm condition. A timing circuit is coupled between the SCR output and the diode to intermittently control the light bulb operation at a predetermined frequency upon smoke detection or other alarm. A dimmer circuit is provided for energizing the primary load at reduced power levels during periods of nonalarm and for intermittently energizing the primary load at full power, bypassing the detection circuit. Switch means are provided for selectively placing in the circuit a neon night light or the dimmer circuit during alarm for the primary load.

REFERENCES:
patent: 3655289 (1972-04-01), Walker
patent: 3717862 (1973-02-01), Sasaki
patent: 3774186 (1973-11-01), Enemark
patent: 4004288 (1977-01-01), Webb, Jr.

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