Determining a dielectric property of a capacitor
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United States of America Patent
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Mar 17, 2015
Grant Date -
Jul 28, 2011
app pub date -
Oct 12, 2009
filing date -
Oct 16, 2008
priority date (Note) -
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Abstract
An apparatus for determining a dielectric property of a capacitor arrangement, having an alternating signal generator for applying an electric alternating signal to the capacitor arrangement. It further contains an evaluation circuit for evaluating at least one electric measuring quantity of an electric signal tapped from the capacitor arrangement. It further comprises balancing means which are arranged in an electric path between the alternating signal generator and the capacitor arrangement and by means of which a parameter of the electric alternating signal can be changed in such a way that an output signal of the evaluation circuit assumes a specific value, preferably zero, under defined constant conditions. Control means are provided for emitting an electric control signal to the balancing means, by means of which the change of the at least one parameter can be controlled. The apparatus can thus be balanced in a simple, rapid, cost-effective and especially automatic way.
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