ELECTROSTRICTIVE BENDING TRANSDUCER

摘要

A bending transducer (20) comprises an electrostrictive ceramic member (2) and electrodes (4, 5) for transmitting an electric field to or from said member and which do not contribute significantly to the bending stiffness of said electrostrictive ceramic member. At least one of the electrodes (4, 5) is capable of a yield strain significantly greater than that of the electrostrictive ceramic member (2); thereby accommodating any deformation of the electrostrictive member (2) that might cause a fracture of that member. In this way, electrical continuity is maintained. The bending transducer is suited to loudspeaker applications.