Active networks and signalling equipment

Electrical transmission or interconnection systems – Nonlinear reactor systems – Parametrons

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Details

179 84VF, 307230, 330109, 333 80R, H04M 100, H03H 702, H03H 1100

Patent

active

040513858

ABSTRACT:
An active network incorporating a gyrator, having a first and a second operational amplifier each said operational amplifier having an inverting input and a non-inverting input, the inverting inputs of said first and said second operational amplifiers being directly connected, and wherein the outputs of said first and said second operational amplifiers are resistively connected to the inverting inputs of said operational amplifiers, an input terminal is connected to said non-inverting input of said first operational amplifier which said input terminal is connected resistively to said output of said second operational amplifier, said output of said first operational amplifier is capacitively coupled to said non-inverting input of said second operational amplifier and said non-inverting input of said second operational amplifier is resistively connected to earth.

REFERENCES:
patent: 3736517 (1973-05-01), Lim
patent: 3824496 (1974-07-01), Hekimian

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