Current amplifiers

Details Current amplifiers Current amplifiers

1976-04-26

1977-06-07

Mullins, James B.

Amplifiers

Modulator-demodulator-type amplifier

330 22, 330 24, 330 25, 330 28, H03F 3343

Patent

active

040286312

ABSTRACT:
Reduction of the input impedance of a current amplifier comprising a first common-emitter amplifier transistor followed in direct-coupled cascade connection by a second common-emitter amplifier transistor is furthered by providing the first transistor with a direct-coupled collector-to-base feedback connection of the following type. A source of bias current has connections to the base and to the collector electrodes of said first transistor through respective impedance elements, as may respectively consist of equal numbers of forward-biased semiconductor junctions.

REFERENCES:
patent: 3868581 (1975-02-01), Ahmed

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