Auxiliary lighting control circuit and method for a HID lamp lig

Details Auxiliary lighting control circuit and method for a HID lamp lig Auxiliary lighting control circuit and method for a HID lamp lig

1997-07-24

2000-06-06

Wong, Don

Electric lamp and discharge devices: systems

Plural load device systems

Electric switch in the supply circuit

315 92, 315250, 315245, 315307, H05B 4146

Patent

active

06072286&

ABSTRACT:
An auxiliary lighting control circuit and method for a lighting system having a HID lamp as the primary light source and an auxiliary light source for providing light when the HID lamp is extinguished or below full brightness but power remains available to the circuit. The circuit senses the HID lamp current and activates a relay to a conductive state using a solid state controller when the HID lamp current is below a predetermined current magnitude to effect the lighting of the auxiliary light source.

REFERENCES:
patent: 3599036 (1971-08-01), Haymaker
patent: 3611432 (1971-10-01), Babcock
patent: 4005331 (1977-01-01), Horowitz
patent: 4996463 (1991-02-01), Horowitz

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