Piezoelectric Transformers For A High Power Module

Abstract

Piezoelectric transformers are mainly commercialized for a LCD back light inverter module. With regard to laptop computers, the required output power for a piezoelectric transformer is around 5 W at present, and higher power will be needed for wider displays in the near future. In addition, modules such as AC-DC adaptors or fluorescent lamps may require a higher output power of more than 30 W. Here, in order to obtain compact and high-power AC-DC adaptors, we explored suitable designs for a multi-layered piezoelectric transformer, by taking into account the effect of the mechanical quality factor and the electromechanical coupling factor in the samples.

Introduction of a novel frequency converter using piezoelectric vibrations modes

“…Various arrangements for the radial mode device have been proposed, of which the radial mode transformer is probably the best-known 3 . Radial mode transformers are suitable for use in up and down converters and have been used in a wide range of applications from fluorescent lamp ballasts 4 to laptop power supplies 5 .…”

Investigation on the Microstructure and Electrical Properties of the Compositionally Modified PZT Ceramics Prepared by Mixed-Oxide Method

“…Lead zirconate titanate Pb(Zr,Ti)O 3 , a solid solution of perovskite ferroelectric PbTiO 3 and anti-ferroelectric PbZrO 3 with different Zr/Ti ratio, is an important material that is widely used in electronic sensors, actuators, resonators and filters [1][2][3]. The materials with a perovskite structure of general formula ABO 3 (where A = mono or divalent ions, B = tri, tetra or pentavalent ions) have been found to be very useful and interesting for different solid-state devices [4][5][6][7][8].…”

Contribution to the study of the coexistence of phases tetragonal-rhombohedral in ceramic type PZT and general form: Pb [ZrxTi0,95-x(Mo1/3In2/3)0.05]O3

“…Lead zirconate titanate Pb(Zr,Ti)O3, a solid solution of perovskite ferroelectric PbTiO 3 and antiferroelectric PbZrO 3 with different Zr/Ti ratio, is an important material that is widely used in electronic sensors, actuators, resonators and filters [1][2][3]. The materials with a perovskite structure of general formula ABO 3 (where A = mono or divalent ions, B = tri, tetra or pentavalent ions) have been found to be very useful and interesting for different solid-state devices [4][5][6][7][8].…”