Audio amplifier turn-off control circuit
US5420535A · kind A · utility
13Cited by
6References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 21, 1993 |
| Grant date | May 30, 1995 |
| Priority date | — |
| Expiry date | May 21, 2013 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03G3/348
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A circuit comprising a transistor which, when supply is turned off, locks the output of the audio amplifier to the supply line, the potential of which is reduced gradually by a filter capacitor, so that the output voltage follows the supply voltage with the same slope, and is so controlled by the filter capacitor, thus eliminating undesired noise ("popping") at the output caused by electric transients in the audio amplifier.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.