Piezoelectric transformer using energy trapping of width-shear vibration in LiNbO/sub 3/ plate

Abstract

Previously proposed piezoelectric transformers are studied for high-voltage step-up applications. A piezoelectric transformer using LiNbO/sub 3/ has low loss and a simple structure. A plate of a conventional piezoelectric transformer is supported only at the point of the node of the vibration. Rigid support is required for high power applications. To apply a piezoelectric transformer to a power circuit, methods of transmitting power and supporting the piezoelectric plate are studied. Based on the studies, a piezoelectric transformer using energy trapping of width shear vibration in LiNbO/sub 3/ plate is proposed.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">&gt;</ETX>