Amplifier employing matched transistors to provide linear curren

Details Amplifier employing matched transistors to provide linear curren Amplifier employing matched transistors to provide linear curren

1978-01-30

1980-02-05

Mullins, James B.

Amplifiers

With semiconductor amplifying device

Including differential amplifier

330271, 330293, H03F 134

Patent

active

041874722

ABSTRACT:
A feedback transistor, whose base and emitter are connected respectively to the base and emitter of a common emitter output transistor, conducts a collector current which is directly proportional to the output current. The collector current of the feedback transistor is fed back to the input of an amplifier which drives the output transistor. The resulting negative feedback controls overall gain, reduces distortion, and controls the quiescent current of the output transistor. Application of this linear current feedback technique to both class A and class B amplifiers is disclosed.

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

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