High efficiency power audio amplifiers comprising two amplifier with a single feed
US5194821A · kind A · utility
23Cited by
4References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 18, 1991 |
| Grant date | Mar 16, 1993 |
| Priority date | — |
| Expiry date | Nov 18, 2011 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F3/3081
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
The amplifier comprises a first and a second amplifier block of opposite phase driven by a single input signal and having its outputs connected to the two terminals of a load. It also comprises circuit means to disable one of the said amplifier blocks when the absolute value of the input signal is less than a predetermined threshold level. A passive feedback system capable of maintaining the amplifier gain constant is located between the aforesaid terminals of the load and the inputs to the two amplifier blocks.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.