Apparatus for supplying power from a ballast circuit to an auxil

Details Apparatus for supplying power from a ballast circuit to an auxil Apparatus for supplying power from a ballast circuit to an auxil

1996-04-23

1998-10-27

Pascal, Robert J.

Electric lamp and discharge devices: systems

Plural power supplies

Discharge device and/or rectifier in one of the supply circuits

315158, 315272, 315276, 323311, H05B 3700

Patent

active

058281827

ABSTRACT:
The present invention is directed to a power supply circuit for controlling a load which, for example, includes both a gas-discharge lamp and an auxiliary load. The power supply circuit includes a ballast circuit for limiting current supplied to the gas discharge lamp. The auxiliary load, such as an occupancy sensor, is connected to receive an alternating current signal from a transformer winding, inductor coil, or other suitable portion of the ballast circuit. The power supply circuit includes a rectifier for rectifying the alternating current signal to provide a stable, low-voltage direct current signal to drive the auxiliary load.

REFERENCES:
patent: 4300090 (1981-11-01), Weber
patent: 4672300 (1987-06-01), Harper
patent: 5039914 (1991-08-01), Szuba
patent: 5130613 (1992-07-01), Szuba

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