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Power oscillator

United States Patent

6,225,756
May 1, 2001
View the Complete Patent at the US Patent & Trademark Office
An oscillator includes an amplifier having an input and an output, and an impedance transformation network connected between the input of the amplifier and the output of the amplifier, wherein the impedance transformation network is configured to provide suitable positive feedback from the output of the amplifier to the input of the amplifier to initiate and sustain an oscillating condition, and wherein the impedance transformation network is configured to protect the input of the amplifier from a destructive feedback signal. One example of the oscillator is a single active element device capable of providing over 70 watts of power at over 70% efficiency. Various control circuits may be employed to match the driving frequency of the oscillator to a plurality of tuning states of the lamp.
Gitsevich; Aleksandr (Montgomery Village, MD)
Fusion Lighting, Inc. (Rockville, MD)
09/ 616,987
July 14, 2000
Certain inventions described herein were made with Government support under Contract No. DE-FG01-95EE23796 awarded by the Department of Energy. The Government has certain rights in those inventions.