Transistor amplifier

Details Transistor amplifier Transistor amplifier

1975-05-16

1976-07-06

Mullins, James B.

Amplifiers

Signal feedback

Combined with control of bias voltage of signal amplifier

330 13, 330 15, 330 17, 330 30D, 330 35, 330149, H03F 316

Patent

active

039684512

ABSTRACT:
A transistor amplifier comprised of a transistor supplied with a first operating voltage and a field effect transistor having triode-type dynamic characteristics and supplied with a second operating voltage. The gate electrode of the field effect transistor is coupled to the transistor collector. In order to stabilize the field effect transistor bias current in the event of fluctuations in the second operating voltage, a voltage control circuit is responsive to such fluctuations to alter the first operating voltage so as to vary the gate voltage applied to the field effect transistor in a direction to stabilize the bias current.

REFERENCES:
patent: 3693107 (1972-09-01), Long

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