Wandlervorrichtung

摘要

The present invention provides a piezoelectric assembly, comprising at least one piezoelectric element (9) and at least one electrode (8) assembled to lie between an energy delivery member (14)10) and a pre-loading member (16), characterised in that the electrode further comprises, where in contact with the piezoelectric element, a coating of a material which is sufficiently compliant so as to deform under the pre-loading stress and conform to the surface of the piezoelectric element.