Differential amplifier system

Details Differential amplifier system Differential amplifier system

1986-01-17

1987-05-19

Mullins, James B.

Amplifiers

With semiconductor amplifying device

Including differential amplifier

330259, 330311, H03F 345

Patent

active

046671668

ABSTRACT:
A differential amplifier system comprising a pair of transistors having their collectors connected respectively to a pair of system output terminals, their bases connected respectively to a pair of system input terminals via a pair of capacitors, and their emitters interconnected via a resistor. Also included are a pair of differential amplifiers each having a first input connected to one input terminal, a second input connected to the emitter of one transistor, and an output connected to the base of one transistor. The pair of differential amplifiers are effective to cause, in their operating range of frequencies, negative feedback such that the emitter voltages of the pair of transistors become equal to the input signal voltages. Higher frequencies are directed to the bases of the transistors via the capacitors.

REFERENCES:
patent: 4366446 (1982-12-01), Henderson et al.

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