Transistor amplifier circuits
US4241314A · kind A · utility
10Cited by
1References
2Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 15, 1978 |
| Grant date | Dec 23, 1980 |
| Priority date | — |
| Expiry date | Nov 15, 1998 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2203/45702
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
In a transistor amplifier circuit of the type wherein two pairs of circuits are used each including a source follower type field effect transistor in the input stage and a bipolar type transistor in the succeeding stage and wherein the paired bipolar transistors constitute a differential amplifier, a plurality of constant current sources are connected such that the sum of the currents flowing through respective transistors will be constant for the purpose of driving the field effect transistors with small voltage in an active region.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.