Transistor amplifier circuit

Details Transistor amplifier circuit Transistor amplifier circuit

1975-07-30

1977-03-08

Rolinec, R. V.

Amplifiers

Signal feedback

Combined with control of bias voltage of signal amplifier

330 22, 330 30D, H03G 330

Patent

active

040115194

ABSTRACT:
A cascode type transistor amplifier circuit having an improved signal-to-noise ratio characteristic, wherein a parallel circuit which consists of a resistance of comparatively large value and a diode is disposed on the emitter side of one of a pair of differential transistors and wherein a variable absorption current circuit is disposed on the emitter side of a grounded-emitter amplifying transistor, the absorption current of the variable absorption current circuit being controlled so as to decrease with increase in the input signal level.

REFERENCES:
patent: 3761741 (1973-09-01), Hoeft
patent: 3803505 (1974-04-01), Ishigaki et al.

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