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:
Dec. 23, 2014
Filed:
Oct. 26, 2012
Sumitomo Electric Industries, Ltd., Osaka-shi, JP;
National University Corporation Toyohashi University of Technology, Toyohashi-shi, JP;
Satoshi Hatsukawa, Osaka, JP;
Kazuhiro Fujikawa, Osaka, JP;
Takashi Tsuno, Osaka, JP;
Nobuo Shiga, Osaka, JP;
Takashi Ohira, Toyohashi, JP;
Kazuyuki Wada, Toyohashi, JP;
Tuya Wuren, Toyohashi, JP;
Kotaro Tanimura, Toyohashi, JP;
Sumitomo Electric Industries, Ltd., Osaka-shi, JP;
National University Corporation Toyohashi University of Technology, Toyohashi-shi, JP;
Abstract
A switching circuitcomprises a connection circuit cascade-connecting control terminals for controlling switching of n number of transistors M-Mn via n−1 number of coils Lrespectively (n is an integer equal to or more than 2; and coils Lrespectively connected between one end of each of the transistors M-Mn and other end of a coil L, one end of the coil Lbeing electrically connected to a DC power source. The transistors M-Mn is sequentially switched with PWM signals inputted to an input terminal of the connection circuit. The switching circuitfurther comprises a transistor Minserted at the one end or the other end of the coil Lin cascade-connection.