Soft magnetic member, reactor, powder for dust core, and method of producing dust core
US9941039B2 · kind B2 · utility
2Cited by
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Key dates
| Filing date | Jun 12, 2015 |
| Grant date | Apr 10, 2018 |
| Priority date | — |
| Expiry date | Feb 26, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01F27/255
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A soft magnetic member is formed such that, when a differential relative permeability in an applied magnetic field of 100 A/m is represented by a first differential relative permeability μ′L, and when a differential relative permeability in an applied magnetic field of 40 kA/m is represented by a second differential relative permeability μ′H, a ratio of the first differential relative permeability μ′L to the second differential relative permeability μ′H satisfies a relationship of μ′L/μ′H≤10, and a magnetic flux density in an applied magnetic field of 60 kA/m is 1.15 T or higher.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.