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:
Feb. 17, 2009
Filed:
Dec. 28, 2006
Chia-peng Wang, Taipei Hsien, TW;
Chih-chan Ger, Taipei Hsien, TW;
Chia-Peng Wang, Taipei Hsien, TW;
Chih-Chan Ger, Taipei Hsien, TW;
Hon Hai Precision Industry Co., Ltd., Tu-Cheng, Taipei Hsien, TW;
Abstract
A driving device for driving a light source module () includes a PFC circuit (), a power stage circuit (), an isolation transformer (T), an inverter circuit () and a PWM controller (). The PFC circuit converts a received AC signal to a DC signal. The power stage circuit is connected to the PFC circuit, for converting the DC signal to another AC signal. The isolation transformer has a primary winding and at least one secondary winding. The primary winding of the isolation transformer is connected to the power stage circuit, for isolating the received AC signal from the light source module. The inverter circuit is connected to the secondary winding of the isolation transformer, for converting an AC signal output from the isolation transformer to an appropriate signal. The PWM controller is connected to the power stage circuit, for controlling output from the power stage circuit.