Method for high efficiency audio amplifier
US7417503B2 · kind B2 · utility
3Cited by
10References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 17, 2005 |
| Grant date | Aug 26, 2008 |
| Priority date | — |
| Expiry date | Jan 1, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F3/38
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
The present invention introduces methods and circuits to amplify audio signals for driving speakers. An additional feedback circuit is added in an audio amplifier to couple the amplifier stage and output stage of the audio amplifier. The feedback circuit turned off as long as output voltages of the audio amplifier are not near saturation. The feedback circuit is turned on to reduce audible noises if output voltages of the audio amplifier are near saturation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.