Popless amplifier
US5796303A · kind A · utility
26Cited by
3References
25Claims
0Family size
Inventors
Key dates
| Filing date | Jun 26, 1996 |
| Grant date | Aug 18, 1998 |
| Priority date | — |
| Expiry date | Jun 26, 2016 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03G3/348
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
An audio amplifier that does not exhibit a "pop" during a change-of-state such as being turned on. The popless amplifier includes an operational amplifier to power a speaker, a circuit to prevent the application of an output voltage from the operational amplifier to the speaker for a selectable period of time and a circuit to charge the output of the operational amplifier to a selectable mid-rail voltage during the time a voltage from the operational amplifier is prevented from reaching the speaker.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.