Acoustic_thermometer

Published:2009/7/20 5:54:00 Author:Jessie | From:SeekIC

Acoustic thermometer. This circuit relies on the principle that the speed of sound varies predictably with temperature in a known medium. The sensor used is in effect a thermally dependent delay line. A40 kHz clock is used to drive a transmitting transducer (courtesy Analog Devices, Inc.).



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