> Well, the data sheet does not specify anything but "Rated Voltage" but
> it may very well be as you say.

For piezo discs that I'm familiar with, when you add an inductor a tank
circuit is created, as the piezo is a capacitor. The voltage spikes 
generated
are more than 5V, so I'm not sure what "Rated Voltage" is applying to.
Self-contained 5V beepers will have a multiplier inside to make a higher
V+ for the element (some are also quite magnetic, which indicates some
ferrous or ferrite enhancement), so *they* should probably not be over-
driven

wbr 

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