Journal of the Korean Institute of Electrical and Electronic Material Engineers (한국전기전자재료학회논문지)

The Korean Institute of Electrical and Electronic Material Engineers (한국전기전자재료학회)
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Characteristics of Step-Down Transformer in PZT Piezoelectric Ceramics

PZT계 압전 세라믹 변압기의 감압특성

  • 김오수 (경북대학교 무기재료공학과) ;
  • 이준형 (경북대학교 무기재료공학과) ;
  • 손정호 (가야대학교 신소재공학부 전자재료전공) ;
  • 남효덕 (영남대학교 전자정보공학부) ;
  • 조상희 (경북대학교 무기재료공학과)
  • Published : 2001.11.01
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Abstract

Ring/dot-type step-down piezoelectric transformer was manufactured by using Pb[(Mn$\sub$1/3/Sb$\sub$2/3)$\sub$0.05/Zr$\sub$0.475/Ti$\sub$0.475/]O$_3$ ceramics, which have excellent high-power piezoelectric properties. The characteristics of step-down piezoelectric transformer as a function of load resistance at output terminal was examined. Voltage gain was greatly dependent on drive frequency and load resistance, and showed maximum voltage gain at the resonance frequency. The output voltage was linearly increased as the input voltage increased. Voltage gain of the step-down piezoelectric transformer with respect to input voltage was very stable when the load resistance was in the range of 50-500 $\Omega$ .

Keywords

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