Amplifier circuit

Details Amplifier circuit Amplifier circuit

1981-09-14

1984-03-27

Mullins, James B.

Amplifiers

With semiconductor amplifying device

Including particular biasing arrangement

330288, 330290, H03F 304

Patent

active

044397453

ABSTRACT:
In an amplifier circuit having a first bipolar transistor receiving an input signal and coupled to the base of a second bipolar transistor of opposite conductivity, DC offset at the amplifier output is prevented by connecting a constant current source in parallel with the emitter resistor of the second transistor. DC feedback can be coupled from the amplifier output to the emitter of the second transistor and/or to a circuit component affecting the value of the input voltage at the base of the first transistor.

REFERENCES:
patent: 4103248 (1978-07-01), Idei

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