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:
Oct. 30, 2018
Filed:
Oct. 09, 2015
Sumitomo Electric Industries, Ltd., Osaka-shi, JP;
National University Corporation Toyohashi University of Technology, Toyohashi-shi, JP;
Hideaki Nakahata, Osaka, JP;
Satoshi Hatsukawa, Osaka, JP;
Kenichi Hirotsu, Osaka, JP;
Takashi Ohira, Toyohashi, JP;
Kyohei Yamada, Toyohashi, JP;
Daiya Egashira, Toyohashi, JP;
Sumitomo Electric Industries, Ltd., Osaka-shi, JP;
National University Corporation Toyohashi University of Technology, Toyohashi-shi, JP;
Abstract
A front stage circuit of a transformer includes a switch series unit, capacitors, and a ground electrical path. The switch series unit, connected in parallel to a power supply, includes odd-numbered/even-numbered switches configured to be alternately turned ON. Assuming that mutual connection points of the switches and points at both ends of the switch series unit are m nodes in total, and one of the points at the both ends is a ground node, the capacitors are provided on at least one of a first electrical path that combines odd nodes and leads them to a first output port, and a second electrical path that combines even nodes and leads them to a second output port, and the capacitors are present to correspond to (m−1) nodes excluding the ground node. The ground electrical path connects the ground node directly to the first output port without an interposed capacitor.