Current amplifier

Details Current amplifier Current amplifier

1974-12-11

1976-11-02

Mullins, James B.

Amplifiers

Modulator-demodulator-type amplifier

330 18, 330 22, H03F 318

Patent

active

039900177

ABSTRACT:
Input current is applied to the emitter electrode of a first transistor, of a first conductivity type, to cause a base current response. This base current response is applied to the base electrode of a second transistor, of a second conductivity type complementary to the first conductivity type, to cause a collector current response. This collector current response is applied to the emitter electrode of a third transistor of the second conductivity type to cause another base current response. This latter base current response is applied to the base electrode of a fourth transistor, of the first conductivity type. The fourth transistor responds with an emitter current flow of opposite sense to the input current, but directly proportional thereto without substantial alpha-dependent or beta-dependent errors.

REFERENCES:
patent: 3551832 (1970-12-01), Graeme

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