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- W2021334232 abstract "Dielectric loss in a piezoelectric ceramic transducer is related to the vibration, and increases markedly under high-power operation. When PZT ceramics is used over the vibration velocity of about 0.25 (m/s), the dielectric loss becomes larger than the mechanical vibration loss. In this paper, the values of the resistances indicating the dielectric loss and mechanical vibration loss in the equivalent circuit are shown. If an equivalent electric circuit including these resistances is utilized, efficiency of the transducers operating at a high-power level may be calculated with more accuracy. By calculation of the efficiency, the maximum efficiency was obtained at the anti-resonance frequency, not at the resonance frequency. These facts cannot be explained by the ordinary equivalent circuit which does not involve dielectric loss related to the vibration." @default.
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- W2021334232 date "1993-05-01" @default.
- W2021334232 modified "2023-10-14" @default.
- W2021334232 title "Dielectric Loss in a Piezoelectric Ceramic Transducer under High-Power Operation; Increase of Dielectric Loss and Its Influence on Transducer Efficiency" @default.
- W2021334232 doi "https://doi.org/10.1143/jjap.32.2418" @default.
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