COIL DEVICE, COMPOSITE COIL DEVICE AND TRANSFORMER DEVICE

Title:

COIL DEVICE, COMPOSITE COIL DEVICE AND TRANSFORMER DEVICE

Document Type and Number:

WIPO Patent Application WO/2007/029594

Kind Code:

A1

Abstract:

Provided are a transformer-type coil device, which is small and thin and has a high coupling degree of a primary coil and a secondary coil, and a transformer device wherein a plurality of pairs of the transformer-type coil devices are incorporated. The coil device (1) is composed of a first winding section (2) wherein a primary coil wire (5) and a secondary coil wire (6) are alternately arranged in a planar state and wound by bifilar winding; a second winding section (3) wherein a secondary coil wire (6) is wound by being arranged in a planar state in parallel to a flat plane formed by the first winding section; and a secondary coil connecting section (4) for connecting an inner diameter side coil wire section of the secondary coil wire of the first winding section with an inner diameter side coil wire section of the secondary coil wire of the secondary winding section. The transformer device (50) is constituted by incorporating a plurality of pairs of such transformer-type coil devices (1).

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Inventors:

KAWAHATA YOSHIO (JP)
KANNO TOMOYUKI (JP)
SASAKI NAOKI (JP)

Application Number:

PCT/JP2006/317226

Publication Date:

March 15, 2007

Filing Date:

August 31, 2006

Export Citation:

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Assignee:

SUMIDA CORP (JP)
KAWAHATA YOSHIO (JP)
KANNO TOMOYUKI (JP)
SASAKI NAOKI (JP)

International Classes:

H01F27/28; H01F38/08

Foreign References:

JPH0855738A	1996-02-27
JP2004040025A	2004-02-05
JP2003173913A	2003-06-20
JP2005158927A	2005-06-16

Other References: