Poling system for piezoelectric diaphragm structures
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United States of America Patent
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Feb 13, 2007
Grant Date -
Jun 23, 2005
app pub date -
Dec 18, 2003
filing date -
Dec 18, 2003
priority date (Note) -
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Abstract
A circuit provides energy to a plurality of piezoelectric diaphragm structures formed in a two-dimensional array. Each piezoelectric diaphragm structure includes a piezoelectric element in operational contact with at least a first side electrode and a second side electrode. A switching system includes a first connection for a first power source, for application of power to the first side electrode and a second connection for a second power source, for application of power to the second side electrode. In a first state, power appropriate for performing a poling operation of the piezoelectric material is available for application to the first electrode, and the second electrode, and in a second state, power appropriate to activate the piezoelectric material to cause operational movement of the poled piezoelectric diaphragm structure is available for application to the first electrode and the second electrode.
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