On Fri, 29 May 1998, Martin Green wrote:

>      ...
>      you drive the piezo with two output pins.  Drive the two pins in
>      opposition (an XOR works well for this), and when the sound is off
>      just make sure that both pins are set to the same level.

So does it damage or influence the piezo in any way when there is a
permanent voltage across it? In one app, I only have one output pin left
and I'd like to use this for a piezo connected over input and output of an
inverter (which is available).

Georg.

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