Piezoelectric element driving apparatus and method, and piezoelectric system using the same
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United States of America Patent
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Jun 13, 2017
Grant Date -
Jul 2, 2015
app pub date -
Apr 7, 2014
filing date -
Dec 30, 2013
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Abstract
A piezoelectric element driving apparatus may apply a predetermined driving signal to a piezoelectric element to drive the piezoelectric element. The driving signal may be an asymmetrical waveform in which amplitudes of first and second polarities thereof are different from each other. An exemplary embodiment in the present disclosure may provide a piezoelectric element driving apparatus and method having a high output while protecting dielectric characteristics of a piezoelectric element by driving the piezoelectric element using an asymmetrical driving signal.
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