The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 12, 2009
Filed:
May. 25, 2007
Jong-tae Hwang, Bucheon, KR;
Gye-hyun Cho, Bucheon, KR;
Jin-sung Kim, Bucheon, KR;
Jin-ho Choi, Bucheon, KR;
Jong-Tae Hwang, Bucheon, KR;
Gye-Hyun Cho, Bucheon, KR;
Jin-Sung Kim, Bucheon, KR;
Jin-Ho Choi, Bucheon, KR;
Fairchild Korea Semiconductor, Ltd., Bucheon, KR;
Abstract
In one embodiment, a power switch driving circuit is provided for a fluorescent lamp ballast. The circuit includes a first power switch driven by a first driver. A controller has a first output terminal for outputting a control signal for controlling the first driver. The first driver includes a first capacitor having a first terminal electrically connected to a control electrode of the first power switch and a second terminal electrically connected to the first output terminal.