Process for controlling a darlington circuit and a low-loss darlington circuit
US4404478A · kind A · utility
16Cited by
6References
4Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 18, 1980 |
| Grant date | Sep 13, 1983 |
| Priority date | — |
| Expiry date | Nov 18, 2000 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K2217/0036
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A process for using a Darlington circuit comprising a main transistor and a pilot transistor wherein the collector voltage of the main transistor is compared with its base voltage. The resulting signal is transmitted to a switch feeding a control current to the base of the pilot transistor or the base of the main transistor. Thus, the circuit operates as a Darlington circuit or else the main transistor operates independently according to the level of the collector current.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.