Piezoelectric crystals are one of many small scale energy sources. Whenever piezoelectric crystals are mechanically deformed or subject to vibration they generate a small voltage, commonly know as piezoelectricity. This form of renewable energy is not ideally suited to an industrial situation.They are also a transducer means if we apply external voltage, they produces vibrations.
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What is Piezo?
Watch out this video to know everything about this little piezo transducer
1) Bone Conduction Headphone,Speakers,Band
This video will let you know the concept of Bone Conduction Technology and also let you know that how you can use this technology and make projects with the help pf Piezo Transducer
2) Simple Piezo Generator
3) Mobile Charger using Piezo