Amplifier output stage
US6411167B2 · kind B2 · utility
3Cited by
3References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 29, 2001 |
| Grant date | Jun 25, 2002 |
| Priority date | — |
| Expiry date | Jan 29, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F1/308
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
An amplifier output stage is described containing a preliminary stage, a final stage and a control device. The quiescent current that flows through transistors of the final stage is adjusted by the preliminary stage. For this, a current that is proportional to the quiescent current is generated in the control device from which control voltages are derived and controlled. The preliminary stage contains adjustable current sources for adjusting the quiescent current in a final step which are controlled by the control voltages.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.