摘要： 陈述了抗电磁干扰（EMI）的原理，分析和探讨了磁芯阻抗特性与尺寸、材料类别、磁芯形状等的关系，并列举了应用的效果。

关键词: 阻抗, 铁氧体材料, EMI, 频段

Abstract: This paper states principle of EMI-resistant,analyses and discusses the relationship between characteristics of core's resistance and sizes,shapes and materials,also states the result of application.

中图分类号: 

• TN03