The Influence of Dielectric Admixtures on Capacitance of Plane Capacitor
The field distribution and capacitance of capacitor vary, when the admixtures are in the dielectric layer of capacitor. Influence of admixture particle shape is evaluated approximating the particle shape by ellipsoid. The expressions are obtained for calculation of electric flux density inside and outside particle and for calculation of relative capacitance variation. The ratio of relative capacitance variation with admixture concentration is calculated for different particle shape using MATLAB. Capacitance increases especially when the admixtures consist of very elongate and plane metallic particles oriented in direction perpendicular to capacitor plates. The electric strength decreases. Obtained results can be used for other problems, when the influence of admixtures to homogeneous medium must be evaluated. Ill. 4, bibl. 3 (in English; summaries in English, Russian and Lithuanian).
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