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Active and Passive Electronic Components
Volume 18, Issue 2, Pages 129-135
http://dx.doi.org/10.1155/1995/39168

On the Stability of Resistively Variable Capacitors Using General Impedance Converters

King Fahd University of Petroleum and Minerals, Box 203, Dhahran 31261, Saudi Arabia

Copyright © 1995 Hindawi Publishing Corporation. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

The stability of three recently proposed circuits for realizing resistively variable capacitors is studied. It is shown that the circuits may oscillate for practical values of active and passive components. Simulation and experimental results are included.