Piezo Transducer: Difference between revisions
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When a piece of [https://en.wikipedia.org/wiki/Piezoelectricity#Actuators '''piezo'''] material (quartz) is squeezed or compressed it produces a small electric current. Conversely, if a small current is passed through a piece of piezo crystal the material will move. This effect is used in piezo transducers. | When a piece of [https://en.wikipedia.org/wiki/Piezoelectricity#Actuators '''piezo'''] material (quartz) is squeezed or compressed it produces a small electric current. Conversely, if a small current is passed through a piece of piezo crystal the material will move. This effect is used in piezo transducers. | ||
Revision as of 18:09, 1 June 2015
When a piece of piezo material (quartz) is squeezed or compressed it produces a small electric current. Conversely, if a small current is passed through a piece of piezo crystal the material will move. This effect is used in piezo transducers.
When used as input devices, vibration creates a small signal which can be used to trigger transistor and logic circuits. As output devices an a.c. signal causes them to vibrate and thus create sound.