Reduced noise-improved gain transistor circuit

Details Reduced noise-improved gain transistor circuit Reduced noise-improved gain transistor circuit

1980-02-01

1982-10-26

Mullins, James B.

Amplifiers

With semiconductor amplifying device

Including field effect transistor

330264, 330300, H03F 316

Patent

active

043564534

ABSTRACT:
A grounded-source field-effect transistor amplifier circuit in which a constant current source is coupled to the source resistor to drain a current therethrough in addition to the normal source current with the amount of current chosen to equalize characteristics among different transistors. In a preferred application, two such transistors are coupled as a complementary pair with their drains connected to the inputs of a push-pull output stage. A variable resistor may be connected between the sources with its wiper connected to ground. A feedback resistor may be coupled between the output of the push-pull stage and the wiper of the variable resistor.

REFERENCES:
patent: 4008442 (1977-02-01), Todokoro
patent: 4021751 (1977-05-01), Suzuki
patent: 4086542 (1978-04-01), Kamiya
patent: 4092612 (1978-05-01), Schade, Jr.
patent: 4238737 (1980-12-01), Yokoyama

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