Fast, low output impedance, low-impedance, low-power clamp circuit for a switched complementary emitter follower
US5955908A · kind A · utility
7Cited by
4References
23Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 20, 1997 |
| Grant date | Sep 21, 1999 |
| Priority date | — |
| Expiry date | Feb 20, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K5/08
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A fast, low output impedance, low-power clamp circuit for a switched complementary emitter follower includes a current mirror circuit and two transistors. In operation, high current is provided to allow for fast switching when turning off the complementary emitter follower. When the complementary emitter follower has been turned off, the clamp circuit reverts to low-power operation requiring much lower current while maintaining the complementary emitter follower in the off condition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.