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:
Mar. 29, 2005
Filed:
Aug. 20, 2002
Kinya Nakatsu, Hitachi, JP;
Satoshi Ibori, Yachimata, JP;
Masayuki Hirota, Narashino, JP;
Tooru Nakajima, Narashino, JP;
Kinya Nakatsu, Hitachi, JP;
Satoshi Ibori, Yachimata, JP;
Masayuki Hirota, Narashino, JP;
Tooru Nakajima, Narashino, JP;
Hitachi, Ltd., Tokyo, JP;
Hitachi Industrial Equipment Systems Co., Ltd., Chiba, JP;
Abstract
A low noise, compact and low cost electric power converter employing a compact common mode transformer, and incorporating a line filter can reduce a leakage current, and can maintain predetermined leakage current reduction effect even if installation condition of the electric power converter or a characteristics of a semiconductor switching element is varied. The electric power converter including a capacitor, a first electrode, a second electrode, a first magnetic body, on which the first electrode and the second electrode are wound to form an LC composite element, connecting electrodes electrically connected to respective of both ends of the first and second electrodes, a second magnetic body for interlinking both ends of the first magnetic body, a coil wound around the second magnetic body in the same winding direction as the first and second electrodes wound around the first magnetic body and a resistor for shorting the output of the coil.