Transistor amplifiers

Details Transistor amplifiers Transistor amplifiers

1976-05-21

1977-10-25

Dahl, Lawrence J.

Amplifiers

With semiconductor amplifying device

Including temperature compensation means

323 4, 330296, 330297, 330256, 330257, H03F 132, H03F 304

Patent

active

040558118

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 linearly temperature-dependent voltages in adjustable ratio with each other to the emitter degeneration resistances. This makes it so that the adjustment of the relative values of the collector currents is substantially unchanging over a temperature range.

REFERENCES:
patent: 3077566 (1963-02-01), Vosteen
patent: 3939434 (1976-02-01), Crosby

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