Methods and apparatus for controlling piezoelectric vibration
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United States of America Patent
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Apr 15, 2003
Grant Date -
Sep 19, 2002
app pub date -
Mar 13, 2001
filing date -
Mar 13, 2001
priority date (Note) -
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Abstract
A method for aerosolizing a liquid comprises providing an aerosol generator having a plate with a plurality of apertures and a piezoelectric element to vibrate the plate. Liquid is supplied to the plate, and the piezoelectric element is energized to vibrate the plate at an initial frequency. The energy level is adjusted to vibrate the plate at its instantaneous resonant frequency during aerosolization of the liquid.
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