PMID: 16615586Apr 18, 2006Paper

High power universal piezoelectric transformer

IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
Shashank PriyaKenji Uchino

Abstract

This study describes a multilayer piezoelectric voltage and power transformer that has one direction poling, operates in a wide-frequency range and delivers both step-up and step-down voltages by inverting the electrical connections. In this design, the input and output electrodes are on the same side of the disk and are isolated from each other by a fixed isolation gap. The electrode pattern is a ring/dot structure such that it uses radial mode for both input and output part that are built-in on the same ceramic disk. A prototype transformer was fabricated of size 15 x 2.78 mm2 having mass of 3.8 gm. In the step-down configuration at the constant output power of 6 W, the transformer characteristics across a 100 ohms load were found to be efficiency = 92%, gain = 0.21 input voltage = 110 Vrms, and temperature rise = 20 degrees C from the room temperature. In the step-up configuration at the constant output power of 5 W, the transformer characteristics across a 5 kohms load were found to be efficiency = 97%, gain = 9.5, input voltage = 16 Vrms, and temperature rise = 8 degrees C from the room temperature. A detailed equivalent circuit analysis of the transformer was done, and the results were found to be in excellent agreement w...Continue Reading

Citations

Jan 1, 2008·The Review of Scientific Instruments·Mingsen GuoX Z Zhao
Apr 7, 2007·The Review of Scientific Instruments·Mingsen GuoX Z Zhao
Jun 19, 2007·IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control·Jiashi Yang
Nov 21, 2007·IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control·Shine-Tzong Ho
Mar 6, 2018·IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control·Xiangyu GaoShashank Priya

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