FIELD: piezoelectric engineering. SUBSTANCE: in the course of polarization or operation actuating piezoid suffers stresses causing cracks developing in multilayer structure on bonding strips mounted on outer surface of piezoid for contacting electrode layers. We propose attaching contact lugs to bonding strips so as to provide protruding area which functions to short out mentioned strips when cracks appear. EFFECT: enhanced reliability of electric contact. 11 cl, 6 dwg
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