High frequency resonant converter for operating metal halide lam

Details High frequency resonant converter for operating metal halide lam High frequency resonant converter for operating metal halide lam

1991-06-25

1993-12-14

LaRoche, Eugene R.

Electric lamp and discharge devices: systems

Current and/or voltage regulation

315 82, 315226, 315287, 315DIG5, H05B 4136

Patent

active

052706206

ABSTRACT:
A method and a ballast circuit are disclosed for operating a metal halide lamp particularly suited for horizontal applications that provides signals capable of being varied so as to control the power applied to the metal halide lamp while still providing a uniform arc. The ballast circuit has a filter which passes a selected band of frequencies for the operating signals of the metal halide lamp.

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patent: 4060752 (1977-11-01), Walker
patent: 4156166 (1979-05-01), Shapiro et al.
patent: 4388565 (1983-06-01), Rividi
patent: 4626746 (1986-12-01), Zaderej
patent: 4862042 (1989-08-01), Herrick
patent: 4937501 (1990-06-01), Ganser et al.
patent: 4999547 (1991-03-01), Ottenstein

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