Range switching transient eliminator circuit

Electrical transmission or interconnection systems – Nonlinear reactor systems – Parametrons

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Details

307251, 307264, 328169, 330141, 330145, H03K 508, H03G 330

Patent

active

040853403

ABSTRACT:
A field effect transistor that shunts a gain control resistor of an operational amplifier is slowly rendered conductive by charging a capacitor through a gate to source resistor and rapidly rendered non-conductive by a transistor connected in parallel with said capacitor so as to prevent undesired transients in the output of the amplifier when the gain is changed from one discrete level to another.

REFERENCES:
patent: 3206689 (1965-09-01), Santana
patent: 3683367 (1972-08-01), Monroe et al.
patent: 3719895 (1973-03-01), Van der Puije
patent: 3748495 (1973-07-01), Messinger
patent: 3770984 (1973-11-01), Connor et al.
patent: 3898580 (1975-08-01), Millsap
patent: 3904975 (1975-09-01), Satoh
patent: 3976894 (1976-08-01), Perkins, Jr. et al.
patent: 3988694 (1976-10-01), Yamazaki

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