Electronic ballast with step up/down power factor correction...

Details Electronic ballast with step up/down power factor correction... Electronic ballast with step up/down power factor correction...

2011-07-05

2011-07-05

Le, Don P (Department: 2819)

Electric lamp and discharge devices: systems

Current and/or voltage regulation

C315S224000, C363S052000

Reexamination Certificate

active

07973494

ABSTRACT:
Electronic ballasts and buck-boost DC-DC converters therefor are presented with a buck converter with two switching devices connected with two capacitances and two diodes to limit the individual switching device voltages to around half the converter DC input voltage or less.

REFERENCES:
patent: 7109659 (2006-09-01), Kamoi
patent: 7190151 (2007-03-01), Ribarich et al.
patent: 7391630 (2008-06-01), Acatrinei
patent: 7529107 (2009-05-01), Mehta
patent: 7894216 (2011-02-01), Melanson
patent: 2006/0170399 (2006-08-01), Griffin

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