Amplifier output filter having planar inductor
US7432793B2 · kind B2 · utility
18Cited by
28References
28Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 19, 2005 |
| Grant date | Oct 7, 2008 |
| Priority date | — |
| Expiry date | Dec 19, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05K2201/09063
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
An output filter for an audio amplifier includes a printed circuit board having at least one aperture extending through the printed circuit board. The output filter includes a first coil winding formed on a layer of the printed circuit board. The first coil winding substantially surrounds the first aperture. A magnetic core includes at least one leg. The at least one leg passes through the at least one aperture.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.