Piezoelectric transducer with integral driver and sensor

Details Piezoelectric transducer with integral driver and sensor Piezoelectric transducer with integral driver and sensor

H - Electricity

01

S

345/10, 310/2

H01S 3/083 (2006.01) G01C 19/66 (2006.01) H01L 41/08 (2006.01) H01S 3/086 (2006.01) H04R 17/00 (2006.01)

Patent

CA 1210842

PIEZOELECTRIC TRANSDUCER WITH INTEGRAL DRIVER AND SENSOR ABSTRACT A transducer is shown wherein a piezoelectric crystal is mounted within a housing upon a thin, flexible membrane. The crystal is coated with a metallic material which permits a potential to be placed across the crystals for displacing the membrane to produce useful motion. The metalic coating is interrupted to form a first and second electrode. The crystal thus is driven by a drive circuit connected to the first electrode while a sensor circuit connected to the second electrode generates a sensor signal useful to determine the position of the crystal.

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