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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Electrical Characteristics of the High Power Piezoelectric transformer Using PSN-PZT system ceramics

PSN-PZT계 세라믹스를 이용한 고출력 압전 트랜스포머의 전기적 특성

  • 이용우 (세명대학교 전기공학과) ;
  • 류주현 (세명대학교 전기공학과) ;
  • 윤광희 (세명대학교 전기공학과) ;
  • 정회승 (주성대학 전기전자소자전공) ;
  • 서성재 (한남대학 산업기술연구소) ;
  • 김종선 (삼성전기 종합연구소)
  • Published : 2000.04.01
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Abstract

In this paper we investigated the structural dielectric and piezoelectric properties of 0.03Pb(Sb$\_$1/2//Nb$\_$1/2/)-0.97Pb(Zr$\_$0.495//Ti$\_$0.505/)O$_3$+0.5 wt% excess PbO + wt% MnO(X=0, 0.1, 0.3, 0.5, 0.7) ceramics to develop the high-power piezoelectric transformer. The piezoelectric transformers with dimension of 27.5$\times$27.5$\times$2.5［mm$^3$］were fabricated and their electrical properties were measured. Maxima of piezoelectric properties such as electro-mechanical coupling factor of 0.534 and mechanical quality factor of 1487 were obtained for the PSN-PZT with 0.3wt% MnO. voltage step-up ratios of piezoelectric transformers at 500［Ω］and no load were 0.78, 12.82, respectively. The maximum efficiency of piezoelectric transformer was 98.6% at 800［Ω］. While the 14W fluorescent lamp were driven by the piezoelectric transformer for more than 20［min］, increment of temperature in the piezoelectric transformer was 7［$\^{C}$］.

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References

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