On 02/02/2011 00:14, Isaac Marino Bavaresco wrote:
> The OP may build a resonant circuit using an inductor and the
> capacitance of the piezo.
> At the resonant frequency the voltage will build-up and it may become
> very loud.

Yes, assuming it is a sound transducer of some sort (and volume at fixed=20
frequency is the goal, as in e.g. a range finder as opposed to an audio=20
speaker)
It may be an actuator or similar though, so I thought more details might=20
be useful to determine the best way to drive it/generate the necessary=20
voltages.

--=20
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