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:
Aug. 09, 2011
Filed:
Oct. 22, 2007
Chan Woong Park, Seoul, KR;
Chan Woong Park, Seoul, KR;
Other;
Abstract
The present invention relates to an error information detection circuit and an error feedback circuit, which detect the error of an output voltage from a voltage induced to a winding. The circuit for detecting error information of an output voltage of a transformer from voltage induced to the feedback winding of the transformer and feeding back the error information includes a flyback period detection circuit () for detecting a flyback period from a voltage induced to the feedback winding. A comparison unit () compares the induced voltage of the feedback winding with a reference voltage and outputs a result of comparison. A logic unit () outputs error information of an output voltage of the transformer according to a flyback period detection output of the flyback period detection circuit and the output of the comparison unit. An up/down control unit () outputs a feedback value corresponding to the error information.