Constant current control circuit
US4172992A · kind A · utility
7Cited by
5References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 3, 1978 |
| Grant date | Oct 30, 1979 |
| Priority date | — |
| Expiry date | Jul 3, 1998 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05F3/20
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A pair of transistors are operated at different current densities so as to develop a differential base to emitter potential. This potential is used as a reference in a negative feedback stabilization circuit which passes a current that is regulated by the potential. The circuit can also regulate the currents flowing in a plurality of additional current sources and sinks connected thereto.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.