Amplifier having two operating modes
US5059921A · kind A · utility
12Cited by
2References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 27, 1990 |
| Grant date | Oct 22, 1991 |
| Priority date | — |
| Expiry date | Jul 27, 2010 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F1/0261
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
An amplifier having an input and output stage for providing drive current to a load coupled thereto includes circuitry that senses when an input signal is applied to the amplifier and is responsive thereto for providing an enabling signal at an output thereof and current regulator circuitry that supplies a low drain current to bias the stages when the amplifier is in a quiescent operating mode absent an applied input signal and that is responsive to the enabling signal for increasing the current supplied to the stages to bias the same in a high bias drain current operating mode.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.