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. 11, 2003
Filed:
Jan. 03, 2002
TDK Corporation, Tokyo, JP;
Abstract
A switching power supply comprises a transformer a switching circuit an output rectifier circuit, an output smoothing circuit, and a snubber circuit. A snubber capacitor has one terminal connected to the one terminal of a snubber diode The other end of the snubber capacitor is led to an output winding of the transformer, while the other terminal of the snubber diode is led to the other of the electrode of an output rectifier diode A snubber inductor has one end connected to the connecting point of the snubber capacitor and the snubber diode, and the other end is. connected to the input side of the output smoothing circuit. The polarity of the diode is arranged to establish a charging loop circulating through the snubber diode, the snubber capacitor and the output winding of the transformer, so as to provide a reduced loss, in a cycle in which the voltage appearing at the output winding of the transformer is the reverse direction to the output rectifier diode.