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:
Jun. 27, 2017
Filed:
Feb. 21, 2014
Nippon Soken, Inc., Nishio, Aichi-pref., JP;
Denso Corporation, Kariya, Aichi-pref., JP;
Shinji Ohoka, Okazaki, JP;
Shinya Goto, Gifu, JP;
Katsutoyo Misawa, Kariya, JP;
Yuuki Takemoto, Kariya, JP;
Tougo Yamaguchi, Aichi-ken, JP;
NIPPON SOKEN, INC., Nishio, JP;
DENSO CORPORATION, Kariya, JP;
Abstract
A noise filter is assembled to an electric power conversion device and has a metal housing casing and two capacitors connected to an external terminal of the device through which an electric power conversion circuit is connected to an external device. The two capacitors, the housing casing and the external terminal make a current loop. A magnetic flux of an alternating magnetic field generated in a part of the electric power conversion circuit penetrates in a first area and a second area formed in the current loop. A first induced noise current is induced in the current loop when the magnetic flux of the generated magnetic field penetrates in the first area. A second induced noise current is induced in the current loop when the magnetic flux penetrates in the second area so that the first induced noise current flows in a reverse direction to the second induced noise current.