Common-mode choke coil
US7091816B1 · kind B1 · utility
28Cited by
3References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 7, 2006 |
| Grant date | Aug 15, 2006 |
| Priority date | — |
| Expiry date | Mar 7, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01F2017/0093
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A common-mode choke coil comprises an insulating layer and first and second coil conductors. The first and second coil conductors are laminated with the insulating layer interposed therebetween and are magnetically coupled to each other. A width W (mm) and a length L (mm) of at least one coil conductor in the first and second coil conductors satisfy the relational expression of:√{square root over (L/W)}<(7.6651−fc)/0.1385where fc (MHz) is the cutoff frequency with respect to differential-mode noise.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.