Transistor amplifiers

Details Transistor amplifiers Transistor amplifiers

1976-05-21

1977-09-27

Mullins, James B.

Amplifiers

With semiconductor amplifying device

Including current mirror amplifier

330278, H03F 304, H03G 310

Patent

active

040514412

ABSTRACT:
The collector currents of first and second junction transistors which have base electrodes biased at the same quiescent potential and have emitter electrodes connected via respective emitter degeneration resistances to a common point, are adjusted relative to each other. This is done by applying temperature-independent currents in adjustable ratio with each other to the emitter degeneration resistances. The resistances have temperature coefficients of 1/T.sub.O to make the adjustment of the collector currents substantially unchanging for a range of temperatures around T.sub.0.

REFERENCES:
patent: 3286138 (1966-11-01), Shockley

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