Feedback amplifiers

Details Feedback amplifiers Feedback amplifiers

1976-01-29

1977-06-14

Mullins, James B.

Amplifiers

Modulator-demodulator-type amplifier

330 19, 330 22, 330 23, 330 25, 330 28, 330 30D, H03F 342

Patent

active

040300420

ABSTRACT:
A three-terminal current amplifier with current-mode feedback to stabilize its current gain to be substantially independent of the common-emitter forward current gains of its component transistors. The feedback connection is made by means of a current splitter which includes a pair of emitter-connected transistors operated at substantially the same absolute temperature, T. These transistors have a potential substantially linearly proportional to T applied between their base electrodes. The current-amplifier output terminal is coupled to the interconnected emitter electrodes of the transistors and the collector electrode of the first transistor is coupled to the current-amplifier input terminal.

REFERENCES:
patent: 3921091 (1975-11-01), Van Kessel et al.
patent: 3922614 (1975-11-01), Van De Plassche

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