Transistor differential amplifier circuit

Details Transistor differential amplifier circuit Transistor differential amplifier circuit

1976-02-24

1977-09-06

Rolinec, Rudolph V.

Amplifiers

Signal feedback

Combined with control of bias voltage of signal amplifier

330 19, 330 22, 330 69, H03F 345

Patent

active

040471195

ABSTRACT:
A transistor differential amplifier circuit includes a pair of NPN type amplifying transistors operated by a constant current source commonly connected to their emitters, and a pair of PNP type load transistors inserted in the collector circuits of said amplifying transistors, respectively. The load transistors are commonly biased with a constant voltage to operate within their saturation regions when input signals supplied on respective bases of the amplifying transistors are balanced, whereby pulse signals with a controlled duty ratio are obtained from the respective collectors of the amplifying transistors.

REFERENCES:
patent: 3401350 (1968-09-01), Barton et al.
patent: 3461397 (1969-08-01), Cunningham
patent: 3761787 (1973-09-01), Davis et al.
patent: 3894290 (1975-07-01), Schoeff

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