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Electrical Properties of Thickness-Vibration-Mode Multilayer Piezoelectric Transformer using Low Temperature Sintering (Pb,Ca,Sr,)(Ti,Mn,Sb)O3 Ceramics

저온소결 (Pb,Ca,Sr,)(Ti,Mn,Sb)O3 세라믹스를 이용한 두께진동모드 적층 압전 변압기의 전기적 특성

  • Published : 2007.11.01

Abstract

In this study, a low temperature sintering multilayer piezoelectric transformer for a DC-DC converter was manufactured using $(Pb,Ca,Sr,)(Ti,Mn,Sb)O_3$ ceramics. Its electrical properties were investigated according to the variation in frequency and load resistance. The voltage step-up ratio of the multilayer piezoelectric transformer showed a maximum value at a resonant frequency of input part and increased with an increase of load resistance. The efficiency of the multilayer piezoelectric transformer showed the highest value at a load resistance of 17 $\Omega$. The output power was increased with increasing input voltage. Temperature increase of the multilayer piezoelectric transformer was increased with the increase of output power. At the load resistance of 17 $\Omega$, the multilayer piezoelectric transformer showed the temperature rises of about $20^{\circ}C$ at the output power of 18 W, and stable driving characteristics.

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