Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference (한국전기전자재료학회:학술대회논문집)

The Korean Institute of Electrical and Electronic Material Engineers (한국전기전자재료학회)
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Effect of Heat Treatment on Properties of Varistors

바리스터의 물성에 미치는 열처리 효과

  • 홍경진 (광주대학교 컴퓨터전자통신공학부) ;
  • 민용기 (광주대학교 컴퓨터전자통신공학부) ;
  • 오수홍 (광주기능대학 전기과) ;
  • 조재철 (초당대학교 전자공학과)
  • Published : 2001.07.01
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Abstract

The structure characteristics of varistor of Zn oxide to depend on the breakdown voltage has been investigated to annealing condition by additive material of Sb$_2$O$_3$ system. The breakdown voltage that has not doping Sb$_2$O$_3$ was 235[V]. ZnO varistors was shown ohmic properties when it's applied voltage was below critical voltage. It was shown non-ohmic properties over critical voltage, because current was increased with decreasing resistance. High voltage ZnO varistors had high breakdown voltage, but it had bad electrical stability with various surge. Sb$_2$O$_3$was increased non-linear coefficient in ZnO varistors grain boundary.

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