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:
Nov. 02, 2004
Filed:
Jun. 09, 2003
Shun-Te Chang, Taipei Hsien, TW;
Ching-Feng Yang, Keelung, TW;
Acbel Polytech, Inc., Taipei Hsien, TW;
Abstract
A power converter with synchronous rectifying through the control of a current transformer is disclosed. The basic architecture of the power converter includes a flyback transformer ( ), a switch controller ( ) and a current transformer ( ). The secondary winding of the flyback transformer ( ) is connected to the primary winding of the current transformer ( ) used to control the switch controller ( ). The primary winding of the current transformer ( ) is connected to a synchronous rectifying switch (Q ). If a current change occurs on the secondary winding of the flyback transformer ( ), the current transformer ( ) detects the phase change and enables the switch controller ( ) to switch off the synchronous rectifying switch (Q ). The current transformer ( ) turns off the synchronous rectifying switch (Q ) anticipatorily in the continuous current output mode to prevent any power loss from crossovers.