Title:
MAGNETIC CORE, COIL COMPONENT COMPRISING IT, AND POWER SOURCE CIRCUIT
Document Type and Number:
WIPO Patent Application WO/2002/035691
Kind Code:
A1
Abstract:
A magnetic core is used for an open magnetic path, and this open magnetic core has a permanent magnet disposed on at least one magnetic path end of a magnetic body having soft magnetic characteristics which forms a magnetic path A coil component comprises this magnetic core and has at least one or more windings of one or more turns around the magnetic core where a permanent magnet is disposed on at least one magnetic path end of a magnetic body having soft magnetic characteristics. A power source circuit comprises the coil component and is so constituted that the polarity of a field impressed on the magnetic body of the soft magnetic characteristics generated by an excitation current flowing by the impressing of an input voltage on the windings mounted around the coil component may be opposite to the polarity of a field impressed on the magnetic body of the soft magnetic characteristics by the permanent magnet.
Inventors:
MATSUMOTO HATSUO
FUJIWARA TERUHIKO
NISHINO HISAO
ITO TORU
YAMADA TAKAO
KONDO MASAHIRO
FUJIWARA TERUHIKO
NISHINO HISAO
ITO TORU
YAMADA TAKAO
KONDO MASAHIRO
Application Number:
PCT/JP2001/009324
Publication Date:
May 02, 2002
Filing Date:
October 24, 2001
Export Citation:
Assignee:
TOKIN CORP (JP)
International Classes:
H01F3/10; H01F3/14; H01F27/255; H02M1/00; H02M3/155; H02M3/28; (IPC1-7): H02M3/155; H02M3/28
Foreign References:
| JPH0547572A | 1993-02-26 | |||
| JPH11214207A | 1999-08-06 | |||
| JPH04119604A | 1992-04-21 | |||
| EP0255051A1 | 1988-02-03 | |||
| JP2000096102A | 2000-04-04 | |||
| JPH116038A | 1999-01-12 | |||
| JPH1070023A | 1998-03-10 | |||
| JPH08273960A | 1996-10-18 |
Other References:
See also references of EP 1330015A4
Attorney, Agent or Firm:
Goto, Yosuke (4-10 Nishishinbashi 1-chome Minato-ku, Tokyo, JP)
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