Low profile magnetic component with planar winding structure having reduced conductor loss
US6650217B1 · kind B1 · utility
11Cited by
6References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 7, 1997 |
| Grant date | Nov 18, 2003 |
| Priority date | — |
| Expiry date | May 14, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01F27/346
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A planar magnetic winding structure such as a transformer or inductor having an air gap in the core has a “keep away” region of 2 to 3 times the gap height in which there are no windings, reducing high frequency winding losses by 35 percent or more, without appreciable increases in low frequency winding losses. Such structures are useful, for example, in electronic ballasts for the lighting industry.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.