Electric lamp and discharge devices: systems – Current and/or voltage regulation
Reexamination Certificate
2008-06-30
2010-11-23
Choi, Jacob Y (Department: 2821)
Electric lamp and discharge devices: systems
Current and/or voltage regulation
C315S2090SC, C315S225000
Reexamination Certificate
active
07839098
ABSTRACT:
A high frequency ballast for a metal halide lamp comprises a controller, a switch, and an oscillator. The controller selectively enables and disables the oscillator via the switch to ignite the lamp. The switch selectively tunes and detunes an inductor of the oscillator by altering an inductance of the inductor. When the inductor is tuned, the oscillator oscillates and provides power to the lamp. When the inductor is detuned, the oscillator does not oscillate and does not provide power to the lamp.
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Lin et al., “2.65 MHz Self-oscillating Electronic Ballast with Constant Lamp-Current Control for Metal Halide Lamp”, 37th IEEE Power Electronics Specialists Conference, Jun. 18, 2006, 6 pgs.
Choi Jacob Y
Montana Shaun P.
Osram Sylvania Inc.
Vu Jimmy T
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