Feed forward darlington circuit with reduced NPN reverse beta sensitivity
US4922129A · kind A · utility
4Cited by
2References
3Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 26, 1989 |
| Grant date | May 1, 1990 |
| Priority date | — |
| Expiry date | Jan 26, 2009 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F3/3435
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A Darlington output stage is shown in which the saturation voltage is reduced to the level of a single common emitter output transistor. The circuit includes a lateral feed-forward transistor that bridges the driver transistor. A resistor is included to ensure that the driver transistor is turned off when the output transistor saturates. An IC version of the circuit is set forth in detail.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.