Proceedings of the KIEE Conference (대한전기학회:학술대회논문집)

The Korean Institute of Electrical Engineers (대한전기학회)
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The Magnetic Properties of Amorphous Molding Cores using for Ballast

안정기용 비정질 함침코어의 자기적 특성

  • Kim, B.G. (Div. of electric materials, Korea Electrotechnology Research Institute) ;
  • Jeong, S.J. (Div. of electric materials, Korea Electrotechnology Research Institute) ;
  • Kim, K.U. (Div. of electric materials, Korea Electrotechnology Research Institute) ;
  • Song, J.S. (Div. of electric materials, Korea Electrotechnology Research Institute) ;
  • Song, Y.S. (YUYU) ;
  • Kim, B.G. (YUYU)
  • 김병걸 (한국전기연구소 전기재료연구부 비정질재료연구팀) ;
  • 정순종 (한국전기연구소 전기재료연구부 비정질재료연구팀) ;
  • 김기욱 (한국전기연구소 전기재료연구부 비정질재료연구팀) ;
  • 송재성 (한국전기연구소 전기재료연구부 비정질재료연구팀) ;
  • 송용설 ((주) 유유 부설연구소) ;
  • 김병규 ((주) 유유 부설연구소)
  • Published : 1996.07.22
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Abstract

To produce low loss amorphous molding cores which are used as choke cores in high efficiency electronic ballast for Metal Halide Lamp, the magnetic properties of amorphous molding cores were investigated with the various fabrication methods. The results are as follows : (1) The total weight of molding core gradually increased as molding time increases. (2) The magnetic properties($B_{10}$, $B_r$, $B_t/B_s$, $H_c$, $W_c$) of molding core drastically deteriorated. This is presumably due to the compressive stress imposed on amorphous core occurred during epoxy curing treatment. (3) Two step annealing process(curing+field annealing) was more or less effective to recover the damaged properties.

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