Transistor amplifier stage with device in its temperature compensated bias network used as preliminary amplifier
US3955108A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 15, 1972 |
| Grant date | May 4, 1976 |
| Priority date | — |
| Expiry date | Sep 15, 1992 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F1/302
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A collector-loaded grounded-emitter transistor amplifier output stage employs a temperature-compensated bias network with an auxiliary transistor having its base electrode supplied quiescent current exclusively through a resistive element connecting the base and collector electrodes. A source of input signal is coupled to the base electrode of the auxiliary transistor by capacitative means and decoupled by resistive means from the collector electrode thereof. The temperature stabilizing auxiliary transistor accordingly provides a preliminary amplification of input signals for application to the base electrode of the output stage amplifier transistor, without use of additional active devices.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.