Title:
MULTI-PHASE-USE MAGNETIC ELEMENT AND PRODUCTION METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2004/019352
Kind Code:
A1
Abstract:
A multi-phase-use magnetic element comprising a plurality of coils embedded in a composite magnetic material, and a negative magnetic flux coupling or a positive magnetic flux coupling present between at least two coils, whereby a multi-phase-use magnetic element such as an inductance and a choke coil suitable for a large-current use in various electronic apparatuses can be downsized further. Such a multi-phase-use magnetic element has excellent ripple current characteristics.
Inventors:
MATSUTANI NOBUYA (JP)
UEMATSU HIDENORI (JP)
IMANISHI TSUNETSUGU (JP)
UEMATSU HIDENORI (JP)
IMANISHI TSUNETSUGU (JP)
Application Number:
PCT/JP2003/010697
Publication Date:
March 04, 2004
Filing Date:
August 25, 2003
Export Citation:
Assignee:
MATSUSHITA ELECTRIC IND CO LTD (JP)
MATSUTANI NOBUYA (JP)
UEMATSU HIDENORI (JP)
IMANISHI TSUNETSUGU (JP)
MATSUTANI NOBUYA (JP)
UEMATSU HIDENORI (JP)
IMANISHI TSUNETSUGU (JP)
International Classes:
H01F17/04; H01F27/02; H01F27/255; H01F17/06; H01F21/12; H01F27/28; (IPC1-7): H01F37/00; H01F27/28; H01F41/04
Foreign References:
| JP2002217416A | 2002-08-02 | |||
| JPH01266705A | 1989-10-24 | |||
| US6362986B1 | 2002-03-26 | |||
| JP2000106312A | 2000-04-11 | |||
| JPH03171702A | 1991-07-25 | |||
| JP2002064027A | 2002-02-28 | |||
| JP2002057039A | 2002-02-22 | |||
| JP2002043131A | 2002-02-08 |
Attorney, Agent or Firm:
Iwahashi, Fumio c/o Matsushita Electric Industrial Co. Ltd. (1006, Oaza Kadom, Kadoma-shi Osaka, JP)
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