Capacitance sensor for detecting a charge voltage of a multi-capacitor circuit
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United States of America Patent
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Oct 9, 2012
Grant Date -
Sep 10, 2009
app pub date -
Mar 10, 2009
filing date -
Mar 10, 2008
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Abstract
A capacitance sensor includes a first charging voltage detector configured to detect a change in a voltage loaded into a first capacitor between an electrode and a ground terminal a second charging voltage detector configured to detect a change in a voltage loaded into a second capacitor among a plurality of electrodes and a determiner configured to generate a determination signal based on a detection voltage transmitted from each of the first charging voltage detector and second charging voltage detector.
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