Circuit for muting noises in a power amplifier
US5488258A · kind A · utility
9Cited by
2References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 3, 1994 |
| Grant date | Jan 30, 1996 |
| Priority date | — |
| Expiry date | Mar 3, 2014 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R3/02
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A power detector is provided for detecting closing of a power switch in a power supply, for producing a power-on signal after a predetermined time from detection of the closing of the power switch. An abnormality detector is provided for detecting an abnormal voltage produced in a circuit of a power amplifier, for producing an abnormality signal when detected. In response to the power-on signal, an output stage of the power amplifier is activated, and the output stage is cut off in response to the abnormality signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.