A thickness-shear high voltage piezoelectric transformer

Article type: Research Article

Authors: Yang, J.S.^a | Zhang, W.^b

Affiliations: [a] Department of Engineering Mechanics, University of Nebraska, Lincoln, NE 68588, USA | [b] Quartz Product Division, Motorola, 1301 E. Algonquin Road, Schaumburg, IL 60196, USA

Abstract: A high voltage piezoelectric transformer working with thickness-shear modes is proposed. For the analysis of the proposed transformer, one-dimensional equations for coupled thickness-shear and flexural motions of a piezoelectric beam with rectangular cross section are employed and are simplified by thickness-shear long wave approximation. Free vibration frequency equation and modes are obtained which exhibit the mechanism of the transformer. The analysis is for piezoelectric materials of arbitrary anisotropy. A ceramic thickness-shear transformer is discussed as an example.

DOI: 10.3233/JAE-1999-131

Journal: International Journal of Applied Electromagnetics and Mechanics, vol. 10, no. 2, pp. 105-121, 1999