Low frequency electronic ballast for gas discharge lamps

Details Low frequency electronic ballast for gas discharge lamps Low frequency electronic ballast for gas discharge lamps

2007-05-22

2007-05-22

Lee, Wilson (Department: 2163)

Electric lamp and discharge devices: systems

Current and/or voltage regulation

C315S2090SC, C315S246000

Reexamination Certificate

active

11105155

ABSTRACT:
An electronic ballast for high intensity gas discharge lamps where the wave form of the lamp current is square wave providing acoustic resonance and flickering free operation. The circuit, having high efficiency, operates in a wide temperature range providing ideal ballast curve and reliable ignition for the lamps. Furthermore, significant energy saving can be achieved by its externally controlled built in dimming capability.

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M.C. Unglert, The need for high-pressure sodium ballast classification, Lighting Design and Application, Mar. 1982.
J. Melis, An output unit for low frequency square wave electronic ballast, SOUTHEASTCON'94 (IEEE). 1994, Miami, Florida.

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