Apparatus for input amplifier stage
US4529947A · kind A · utility
45Cited by
4References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 4, 1984 |
| Grant date | Jul 16, 1985 |
| Priority date | — |
| Expiry date | Jun 4, 2004 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10D84/209
Abstract
A differential stage of an amplifier includes an input transistor and a second transistor with a significantly greater emitter cross-sectional area than the input transistor. Quiescent emitter current is divided between the two transistors in substantially the same ratio as the emitter cross-sectional areas so that the emitter current densities are substantially equal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.