Electroacoustic transducer for prodn. quality testing - has sound radiating or receiving plates, with piezoelectric elements distributed between them

摘要

The piezoelectric element consists of supports (2) distributed over the sound radiating or receiving plates (3, 31), and resting by their ends on these plates. When excited, the supports set the plates (3, 31) in oscillation, and these plate oscillations generate electric signals. Their length is perpendicular to the plates (3, 31).