Piezo generator On YouTube.

How to generate energy through motion or pressure? A simple piezoelectric drive (the kind that you as a transducer / sonar) can be used in reverse to generate a momentary power. This short movie shows how an LED, the welding process on the hard disks of a piezoelectric disk when the lights or pull down. Note that the LED lights better if the piezo is pressed instead exploited ...

Keywords: piezo, piezoelectric, generator