Choke coil for eliminating common mode noise and normal mode noise
US5629661A · kind A · utility
17Cited by
2References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 2, 1996 |
| Grant date | May 13, 1997 |
| Priority date | — |
| Expiry date | Feb 2, 2016 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01F37/00
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A choke coil having a sufficient noise eliminating effect against common mode and normal mode noises. The choke coil has a bobbin, a pair of windings wound around the bobbin, and magnetic cores inserted in a rectilinear body portion of the bobbin. The bobbin is constituted by a main body and a cap each of which incorporates a magnetic core. The upper half of those magnetic cores forms a closed magnetic circuit that extends around one of the windings while the lower half forms a closed magnetic circuit that extends around the winding.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.