Title: Starting and operating circuit for gaseous discharge lamps

Abstract: Circuits are disclosed for starting and operating a high pressure sodium vapor lamp in combination with another gaseous discharge lamp of low voltage breakdown characteristics. The sodium vapor lamp is connected in series with a ballast induction coil, while the low voltage breakdown lamp, a portion of the ballast coil at its input side, and a capacitor are connected in a series discharge loop to produce high frequency, high voltage pulses for starting the sodium vapor lamp, and providing for operation of both lamps. A ballast capacitor is connected in series with the low voltage lamp to provide a lead ballast circuit therefor.

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Inventors: Nuckolls, Joe A. (Hendersonville, NC, US)

Application Number: 510287
Filing Date: 1974-09-30
Publication_date: 1976-01-06
Assignee: General Electric Company ()
Primary Class(es): 315/177 315/183, 315/231, 315/258, 315/324
Other Classes:
US Patent Ref:

2682014	Jun, 1954	Feinberg	315/231.
2686906	Aug, 1954	Schevtchuk	315/228.
2760118	Aug, 1956	Moerkens	315/228.
3235769	Feb, 1966	Wattenbach	315/176.

Other Refs:
Primary Examiner: Demeo, Palmer C.
Assistant Examiner:
Attorney: Greenberg; Sidney