Vibration and Fatigue of Multilayer Piezoelectric Transformer

The multilayer piezoelectric transformer (MPT) has features such as small compact, high efficiency, high step-up ratio, absence of electromagnetic, etc. So it is an ideal substitution for power supplies based on conventional electromagnetic transformer in small-sized electronic instruments. In this paper, using tape casting technology and Pb(Mg(1/3)Nb(2/3))O(3)-Pb (Ni(1/3)Nb(2/3))O(3)-Pb(ZrTi)O(3) piezoelectric material, multilayer piezoelectric transformer prototypes were sintered and fabricated. The prototypes were co-fired using 70/30 Ag-Pb internal electrodes. Using Polytec300-F Vibrometer, the vibration mode and displacement in the longitudinal direction were measured. Vibration behavior and transformation ratio of the prototypes were tested to investigate the performance degeneration and fatigue of MPT.