Current amplifiers

Details Current amplifiers Current amplifiers

1975-12-10

1976-11-16

Mullins, James B.

Amplifiers

Modulator-demodulator-type amplifier

330 19, 330 20, 330 22, 330 25, 330 30R, 330 40, H03F 342

Patent

active

039926761

ABSTRACT:
Conventionally, the common-emitter current gain h.sub.fe of a first transistor is reduced to a better-defined value -G by shunting the series connection of its base-emitter junction and emitter degeneration resistor with the series connection of a self-biased, second transistor and a further resistor. By including, per the present invention, a still further resistor in the collector-to-base connection of the second transistor, properly proportioned relative to the other resistors, a second-order dependence of -G upon h.sub.fe can be significantly reduced.

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

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