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:
Mar. 01, 2011
Filed:
Jul. 02, 2008
Kun Le, Shenzhen, CN;
Tong Zhou, Shenzhen, CN;
Innocom Technology (Shenzhen) Co., Ltd., Shenzhen, Guangdong Province, CN;
Chimei Innolux Corporation, Miao-Li County, TW;
Abstract
An exemplary power supply circuit () includes a pulse width modulation circuit () providing a pulse signal, a voltage conversion circuit () converting a primary voltage to an output voltage according to the pulse signal, a feedback circuit (), and a control circuit (). The feedback circuit includes a sampling branch () detecting a current of the voltage conversion circuit and accordingly providing a feedback signal, and a voltage division branch () electrically coupled to the sampling branch. The control circuit is electrically coupled to the voltage division branch, and is configured for disabling the voltage division branch after a predetermined period of time when the output voltage is within a predetermined range.