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Revision as of 03:12, 8 May 2012 by IngerPointer374 (Talk | contribs) (New page: [http://www.sound-buzzer.com/ Piezo buzzers] are small electronic devices that emit sounds when driven by low voltages and currents. They are also called piezoelectric buzzers. They usuall...)
Piezo buzzers are small electronic devices that emit sounds when driven by low voltages and currents. They are also called piezoelectric buzzers. They usually have two electrodes and a diaphragm. The diaphragm is made from a metal plate and piezoelectric material such as a ceramic plate.
