Output stage for an operational amplifier
US4922208A · kind A · utility
9Cited by
1References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 7, 1989 |
| Grant date | May 1, 1990 |
| Priority date | — |
| Expiry date | Apr 7, 2009 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F3/3096
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
In an output stage of an operational amplifier comprising first and second NPN output transistors a circuit is coupled between the positive supply conductor and the collector of the first NPN transistor for providing a boosted base current drive thereto as a function of the load current sourced from the emitter of the first transistor to the output of the operational amplifier. The circuit senses the collector current flowing through the first transistor for increasing the base current drive thereto as the collector current increases.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.