发明名称 |
COMPOSITE FERRITE CORE AND NOISE CURRENT ABSORPTION TOOL |
摘要 |
PROBLEM TO BE SOLVED: To provide a composite ferrite core and a noise current absorption tool having a high noise countermeasure effect in a wide frequency band.SOLUTION: A composite ferrite core 1 includes: a first ferrite core 7 having a first through-hole 11; and a second ferrite core 9 which has a second through-hole 13 and whose magnetic permeability is lower than that of the first ferrite core 7. The ratio between a thickness L1 of the first through-hole 11 in the axial direction in the first ferrite core 7 and a thickens L2 of the second through hole 13 in the axial direction in the second ferrite core 9 is in a range of 6:4 to 9:1. |
申请公布号 |
JP2014096538(A) |
申请公布日期 |
2014.05.22 |
申请号 |
JP20120248610 |
申请日期 |
2012.11.12 |
申请人 |
KITAGAWA IND CO LTD |
发明人 |
YOSHINO MASATO;MATSUZAKI TORU |
分类号 |
H01F17/06;H01F3/10;H01F27/02;H01F27/24;H01F27/26 |
主分类号 |
H01F17/06 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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