Gaseous discharge lamp system with auxiliary lamp

Details Gaseous discharge lamp system with auxiliary lamp Gaseous discharge lamp system with auxiliary lamp

1992-03-24

1993-10-26

Pascal, Robert J.

Electric lamp and discharge devices: systems

Automatic substitution of the load device or electrode

315 90, 315 91, 315 92, 315 93, 315159, H05B 3910

Patent

active

052569462

ABSTRACT:
A lighting system having a primary light source and an emergency lamp. The emergency lamp is turned on and remains on upon failure or removal from the system of the primary light source. The system also includes a control device for sensing when the voltage across the primary light source rises above a predetermined level in determining when to turn on the emergency lamp.

REFERENCES:
patent: 3659146 (1972-04-01), Munson
patent: 3694692 (1972-09-01), Pressman
patent: 3890534 (1975-06-01), Horowitz
patent: 3927348 (1975-12-01), Zawadski
patent: 4047076 (1977-09-01), McNamara, Jr.
patent: 4091307 (1978-05-01), McNamara, Jr.
patent: 5072156 (1991-10-01), Droho

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