Thanks Mike,
Apparently DARPA is looking onto the possibility of harvesting electrical power
from piezoelectric sources.
See the following Wikipidia article:
http://en.wikipedia.org/wiki/Piezoelectric
About a third of the way down the Wiki article is the following tantalizing but
brief senten
Steve,
The electrical model of a piezoelectric generator is a voltage source in
series with a capacitor. This means you can't get DC out of such a
generator, but you can get high voltage bursts by hammering a crystal as in
a charcoal grill igniter. The snap you hear is in part a hammer hitting
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