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Home › Magazines › 2002 › December › Vibration Detector

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Vibration Detector

Published in issue 316, December 2002

This little circuit may act as a vibration-activated burglar alarm. The sensor, which may be secured unobtrusively to a door or a window, is a an inexpensive piezo buzzer. Piezo ceramic material deforms under application of voltage, but the reverse also applies, i.e., a piezo ceramic element will produce a voltage if it is deformed in any way, by acoustic waves (sound) or mechanical vibration.

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Please note. In view of the complexity of international markets, Elektor cannot guarantee the availability of components for this project.

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