Switching audio power amplifier with de-noise function
US7489190B2 · kind B2 · utility
2Cited by
3References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 11, 2007 |
| Grant date | Feb 10, 2009 |
| Priority date | — |
| Expiry date | Jul 11, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K7/08
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
The invention provides a switching audio power amplifier with de-noise function including a pulse width modulator, a de-noise circuit and a bridge circuit. The pulse width modulator performs pulse width moderation to generate the first and second PWM signals according to an input audio signal. The de-noise circuit receives the first and second PWM signals. And the bridge circuit conducts a driving current alternately flowing to and from a load according to the control signals output from the de-noise circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.