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. 18, 2003
Filed:
Jun. 06, 2002
Applicant:
Inventor:
Manolo Mariano M. Melgarejo, Quezon, PH;
Assignee:
Astec International Limited, , HK;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02M 3/335 ; H02M 7/68 ;
U.S. Cl.
CPC ...
H02M 3/335 ; H02M 7/68 ;
Abstract
A zero voltage switching (ZVS) or zero voltage transition (ZVT) bridge converter for driving a rectifier circuit. A clamp winding or inductor is placed in parallel with a resonant choke of the bridge converter. The clamp winding clamps the voltage at the resonant choke. Clamping the resonant choke in turn limits the voltage at the secondary winding of an output transformer. The output transformer is connected to the rectifier circuit. By limiting the voltage at the output transformer, the voltage at the rectifier circuit is limited as well.