Noise filter comprising a soft magnetic alloy ribbon core
US5619174A · kind A · utility
7Cited by
17References
53Claims
0Family size
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Key dates
| Filing date | Jul 29, 1994 |
| Grant date | Apr 8, 1997 |
| Priority date | — |
| Expiry date | Jul 29, 2014 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01F30/16
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A noise filter includes an annular magnetic core made of a soft magnetic alloy ribbon mainly made of Fe and containing B and at least one element selected from a group consisting of Ti, Zr, Hf, Nb, Ta, Mo and W, at least 50% of the soft magnetic alloy structure being composed of body-centered cubic structured fine grains having an average grain size of 30 nm or below, a casing for accommodating the magnetic core and having an insulating plate, a pair of coils separated from each other by the insulating plate, and an electronic circuit for connecting a core element made up of the magnetic core, the casing and the coils.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.