Audio amplifier circuit with suppression of unwanted noise when powered on from standby
US7113031B2 · kind B2 · utility
7Cited by
16References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 1, 2004 |
| Grant date | Sep 26, 2006 |
| Priority date | — |
| Expiry date | Apr 28, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F3/187
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A power amplifier circuit comprising at least one first amplifier having a first input receiving an input voltage through at least one first coupling capacitor and connected to an output of the first amplifier, and having a second input, separate from the first input, receiving a reference voltage supplied by a time constant circuit comprising a decoupling capacitor, at least one first controllable switch connecting the first and second inputs.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.