Abstract
For most PZT based piezoelectric materials the shear mode coupling constant is twice as large as the transverse mode coupling. From this motivation, a new circular piezoelectric transformer was designed. Non-concentric input electrodes and nonuniform output poling lead to the usage of shear mode piezoelectric effect at (3,0) radial mode resonance frequency. A prototype three layered transformer with 25.4-mm in diameter and 1.5 mm in thickness, operating at 153 kHz, was fabricated and its characteristics were measured. Characteristics, such as efficiency, step-up ratio and temperature rise of the proposed transformer are presented.
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© 2000 Springer Science+Business Media Dordrecht
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Koc, B., Uchino, K. (2000). A Disk Type Piezoelectric Transformer with Crescent Shape Input Electrodes. In: Galassi, C., Dinescu, M., Uchino, K., Sayer, M. (eds) Piezoelectric Materials: Advances in Science, Technology and Applications. NATO Science Series, vol 76. Springer, Dordrecht. https://doi.org/10.1007/978-94-011-4094-2_36
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DOI: https://doi.org/10.1007/978-94-011-4094-2_36
Publisher Name: Springer, Dordrecht
Print ISBN: 978-0-7923-6213-5
Online ISBN: 978-94-011-4094-2
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