Transistor amplifier circuit

Details Transistor amplifier circuit Transistor amplifier circuit

1978-11-14

1980-08-26

Mullins, James B.

Amplifiers

With semiconductor amplifying device

Including differential amplifier

330255, 330257, H03F 345, H03G 300

Patent

active

042197813

ABSTRACT:
A gain control transistor amplifier circuit employing as a double balance type cascade amplifier comprises two differential amplification stages. Current mirror circuits are provided for the respective stages for applying the outputs of these stages to a constant current source circuit. A resistor and a DC stabilization voltage source are connected to the output stage of the latter current mirror circuit, thereby obtaining an output which is stable irrespective of the gain control operation thereof.

REFERENCES:
patent: 3891937 (1975-06-01), Bockelmann et al.
patent: 3987368 (1976-10-01), Ahmed

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