Circuit for reducing pop noise
US9641134B2 · kind B2 · utility
0Cited by
2References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 21, 2015 |
| Grant date | May 2, 2017 |
| Priority date | — |
| Expiry date | Aug 21, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2200/129
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
The invention concerns an amplifier circuit comprising: an amplifier having a first input coupled to an input node of the amplifier circuit via a first resistor and an output coupled to a load via a coupling capacitor, the output being coupled to the first input via a second resistor; and a current ramp generator adapted to supply a current ramp to the first input of the amplifier during a power up phase or power down phase of the amplifier circuit to control the rate of charge or discharge of the coupling capacitor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.