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. 27, 2013
Filed:
Apr. 26, 2011
Hideki Asuke, Niiza, JP;
Hideharu Takano, Niiza, JP;
Masayoshi Yamamoto, Matsue, JP;
Sanken Electric Co., Ltd., Niiza-shi, JP;
National University Corporation Shimane University, Matsue-shi, JP;
Abstract
The present invention includes: a main switch Trconnected to two ends of a DC power supply Vi via a first primary windingand a second primary winding, connected to the first primary winding in series, of a transformer T; a series circuit connected to the two ends of the main switch, and including a reactor L, a diode D, a smoothing capacitor Co and a hoist windingconnected to the second primary winding in series; a series circuit connected to the two ends of the main switch, and including a diode D, a diode Dand the smoothing capacitor; a control circuitto turn on and off the main switch; a soft-switching circuit Da, Tra, La, Cato cause the main switch to perform a soft-switching operation each time the main switch turns on; and a switching control circuitto switch the soft-switching circuit between operating and non-operating modes in accordance with the state of a load.