"Class ""B"" type amplifier"
US4335358A · kind A · utility
13Cited by
2References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 21, 1980 |
| Grant date | Jun 15, 1982 |
| Priority date | — |
| Expiry date | Jan 21, 2000 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2203/45098
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A Class "B" amplifier circuit in which Class "B" conversion takes place in a converter portion of the circuit in combination with a differential amplifier input circuit, rather than in the output stage. The converter modulates the DC bias current supplied to the differential amplifier input circuit as a function of the input signal, in order to achieve Class "B" operation. The output amplifier portion of the circuit includes a pair of complementary, series-connected transistors, each of which is connected in a common-emitter configuration. The disclosed circuit provides a high input impedance and excellent dynamic range.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.