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:
May. 12, 2009
Filed:
Oct. 21, 2003
Applicant:
Mamoru Tsuruya, Niiza, JP;
Inventor:
Mamoru Tsuruya, Niiza, JP;
Assignee:
Sanken Electric Co., Ltd., , JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02M 3/335 (2006.01);
U.S. Cl.
CPC ...
Abstract
A primary windingof a transformer T and a switch Qare connected in series with a DC power source Vdc. A series circuit composed of a switch Qand a snubber capacitor Cis connected in parallel with the primary winding or the switch Q. A saturable reactor SLis connected in parallel with the primary winding 5. A series circuit composed of a diode Dand a capacitor Cis connected in parallel with a secondary windingof the transformer T, to form a rectifying/smoothing circuit. A control circuitturns on and off the switches Qand Qalternately and turns off the switch Qwhen a current to the switch Qincreases.