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Title:
COIL COMPONENT
Document Type and Number:
Japanese Patent JP2010093083
Kind Code:
A
Abstract:

To provide a coil component with a wide variable range of inductance by a simple structure.

The coil component 10 includes a first magnetic core 2 in a closed magnetic path structure, a first coil 3 wound to the first magnetic core 2 and a magnetic permeability variable part 6 changing magnetic permeability in a part of the first magnetic core 2. The magnetic permeability variable part 6 has a structure where a second coil 8 is wound to the second magnetic core 7 having an open magnetic path part 9, and it constitutes a closed magnetic path by making the open magnetic path part 9 abut on a part of the first magnetic core 2. Inductance of the first coil 3 is controlled by the open magnetic path part 9 of the second magnetic core 7 abutting on a part of the first magnetic core 2.


Inventors:
YOSHIDA TETSUO
WATANABE KEISUKE
Application Number:
JP2008262183A
Publication Date:
April 22, 2010
Filing Date:
October 08, 2008
Export Citation:
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Assignee:
SUMIDA CORP
International Classes:
H01F29/14
Attorney, Agent or Firm:
Yoshitsuno Kakuda
Hitoshi Ito