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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.:

US 9455080 B1

PDFFull Text
Date of Patent:
Sep. 27, 2016

Filed:

Jan. 22, 2015

Reactor

Applicant:

Tdk Corporation, Tokyo, JP;

Inventors:

Tomofumi Kuroda, Tokyo, JP;

Yu Sakurai, Tokyo, JP;

Hideyuki Itoh, Tokyo, JP;

Assignee:

TDK CORPORATION, Tokyo, JP;

Attorney:

Oliff PLC

Primary Examiner:

Elvin G Enad

Assistant Examiner:

Kazi Hossain

Int. Cl.
CPC ...
H01F 17/06 (2006.01); H01F 27/24 (2006.01); H01F 21/06 (2006.01); H01F 27/02 (2006.01); H01F 27/29 (2006.01); H01F 27/255 (2006.01); H01F 27/34 (2006.01); H01F 3/10 (2006.01); H01F 37/00 (2006.01); H01F 3/14 (2006.01);
U.S. Cl.
CPC ...
H01F 27/255 (2013.01); H01F 3/10 (2013.01); H01F 27/34 (2013.01); H01F 37/00 (2013.01); H01F 3/14 (2013.01); H01F 2003/106 (2013.01);
Abstract

A reactor using a composite magnetic core in which a ferrite core and a soft magnetic metal core are combined. The reactor is composed of a pair of yoke portion magnetic portions composed of ferrite, winding portion core(s) disposed between the opposite planes of the yoke portion cores, and coil(s) winding around the winding portion core(s). The winding portion core(s) is/are formed using a soft magnetic metal core with a substantially constant cross sectional area. Junction portion cores composed of soft magnetic metal powder cores with a tabular shape are disposed at the spaces where the winding portion core(s) face(s) the yoke portion cores, and the area of the part where the junction portion core faces the yoke portion core is made to be 1.3 to 4.0 times that of the section of the winding portion core.

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