Amplifier with FET having gate leakage current limitation

Details Amplifier with FET having gate leakage current limitation Amplifier with FET having gate leakage current limitation

1975-10-28

1977-03-29

Mullins, James B.

Amplifiers

Modulator-demodulator-type amplifier

330 15, 330 22, 330 24, 330 35, H03F 316

Patent

active

040152120

ABSTRACT:
An amplifier having at least a drive stage and an output stage, the output stage comprised of an FET for applying an amplified signal to a load. The drive stage includes a transistor device whose output is direct coupled to the gate electrode of the FET, the transistor device being supplied with an input signal to be amplified. A constant current source is coupled to the output of the transistor device, and thus to the gate electrode of the FET, and provides a current of predetermined magnitude to thus limit the gate leakage current during periods that the FET is cut off.

REFERENCES:
patent: 3626825 (1971-12-01), Years
patent: 3810031 (1974-05-01), Poujois
patent: 3887881 (1975-06-01), Hoffmann
patent: 3921089 (1975-11-01), Tsurushima
Altman, "IC On Amp Has C-Mos Output," Electronics, Sept. 19, 1974, pp. 133, 135.

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