High frequency electronic ballast with sine wave oscillator

Details High frequency electronic ballast with sine wave oscillator High frequency electronic ballast with sine wave oscillator

2008-06-17

2008-06-17

Wong, Don (Department: 2163)

Electric lamp and discharge devices: systems

Regulation of the control current and/or potential applied...

C315S224000, C315S220000

Reexamination Certificate

active

07388334

ABSTRACT:
A high frequency sinusoidal wave is generated and applied directly to a gas discharge lamp in multiple phases in a power efficient electronic ballast. Uniting a high frequency current fed oscillator with a transformer, where direct current may be applied to the center tap of the transformer primary winding through an appropriately sized inductor to enable the impression of a sinusoidal alternating current at the secondary winding. This sinusoidal alternating current is applied directly to a gas discharge lamp. Feedback from the transformer controls the switching of the oscillator at resonant frequency.

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