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:
Sep. 08, 2009
Filed:
Sep. 15, 2006
Chih-chan Ger, Shenzhen, CN;
Ko-wen Wang, Shenzhen, CN;
Chih-Chan Ger, Shenzhen, CN;
Ko-Wen Wang, Shenzhen, CN;
Hon Hai Precision Industry Co., Ltd., Tu-Cheng, Taipei Hsien, TW;
Abstract
A driving device for driving a lamp (L) includes a power stage circuit (), a transformer circuit (), a resonance circuit () and a PWM controller (). The power stage circuit converts a received direct current (DC) signal to an alternating current (AC) signal. The transformer circuit is connected to the power stage circuit, for stepping up the AC signal. The transformer circuit includes a transformer and a capacitor. The transformer has a primary winding and a secondary winding. The capacitor is connected between a high voltage terminal and a low voltage terminal of the secondary winding of the transformer. The PWM controller is connected to the power stage circuit, for controlling output of the power stage circuit.