Base bias current compensator
US4952867A · kind A · utility
19Cited by
16References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 27, 1989 |
| Grant date | Aug 28, 1990 |
| Priority date | — |
| Expiry date | Apr 27, 2009 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R25/502
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A bias current compensator to supply the input bias current of a transistor. The bias current compensator may be used, for example, with the controlled amplifiers used in an automatic gain control system. The bias current compensator prevents bias current changes, caused by a varying control signal, from appearing in the output of the controlled amplifier. The bias current compensator includes a current source, first, second, and third transistors, and a feedback amplifier.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.