Title:
NOISE FILTER, ELECTRONIC CIRCUIT BOARD USING IT, AND ADJUSTMENT METHOD OF ATTENUATION PEAK FREQUENCY
Document Type and Number:
Japanese Patent JP2009016535
Kind Code:
A
Abstract:
To provide a noise filter capable of simply and appropriately providing, in particular, a predetermined attenuation peak frequency; an electronic circuit board using the noise filter; and an adjustment method of an attenuation peak frequency.
In this sheet-like noise filter 6 with a flat amorphous magnetic alloy represented by Fe-Co-Ni-M-P-C-B-Si and an insulating material mixed therein, sheet width dependency is imparted to the attenuation peak frequency of its attenuation characteristic. Based on the sheet width dependency, the sheet width is adjusted to provide a predetermined attenuation peak frequency.
Inventors:
SATO YUSUKE
TAKAHASHI TOSHIO
ISHIGAKI TSUTOMU
TAKAHASHI TOSHIO
ISHIGAKI TSUTOMU
Application Number:
JP2007176126A
Publication Date:
January 22, 2009
Filing Date:
July 04, 2007
Export Citation:
Assignee:
ALPS ELECTRIC CO LTD
International Classes:
H05K9/00; H01F1/153; H01F1/26; H03H7/01
Attorney, Agent or Firm:
野▲崎▼ 照夫
Masayoshi Miwa
Masayoshi Miwa
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