Electroacoustic transducer for underwater applications

摘要

The transducer has a ring (10) supporting a number of piezoelectric ceramic plates (11, 12), positioned in oppositely polarised pairs fitted into equi-angularly spaced axial slits (13) formed in the ring. The axial slits end at a given spacing from each end face of the ring, with the piezoelectric ceramic plates pressed together by the parallel sidewalls of the slit. Pref. the ring is made of Al.