Control device for suppression of residual vibration of piezoelectric transducer
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United States of America Patent
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Aug 20, 2013
Grant Date -
Mar 22, 2012
app pub date -
May 3, 2011
filing date -
Sep 17, 2010
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Abstract
A control device for suppression of residual vibration of a piezoelectric transducer includes a capacitive energy storage component, and a switch unit. The control device is operable in a non-working mode, in which the switch unit provides voltage on the capacitive energy storage component to the piezoelectric transducer for reducing the residual vibration of the piezoelectric transducer. The capacitive energy storage component has a capacitance value that is sufficient for enabling the voltage on the capacitive energy storage component to substantially track voltage on the piezoelectric transducer under the non-working mode.
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