涡电流电磁感应演示仪的设计  

A design of the apparatus demonstrating electromagnetic inductionfor eddy current

作　　者：尹正茂[1] 罗少萍[1] 吴都[1] 彭秀华[1] 

机构地区：[1]长江大学物理科学与技术学院,湖北荆州434023

出　　处：《大学物理》2009年第2期49-51,共3页College Physics

摘　　要：以一个新的角度——涡电流效应演示电磁感应现象.演示仪器引入气垫导轨,由悬挂的钕铁硼永磁铁与铝板小车在接近无外界阻力的状态下相互作用来演示动生电动势现象;由高频交流电磁铁加热铝板小车或点亮接有线圈的小灯泡演示感生电动势现象.This design uses a new way, eddy current principle, to demonstrate electromagnetic induction phenomenon. Air cushion track is introduced into the mechanism. The generate effect is demonstrated by the interaction between Nd-Fe-B permanent magnet and aluminum-plant-vehicle in an ideal condition without resistance. The transformer effect is demonstrated by high frequency alternating electromagnetic magnet heating aluminumplant-vehicle or lighting tiny bulb connected to coil.

关 键 词：涡电流 电磁感应 钕铁硼永磁铁 气垫导轨 高频交流电磁铁 

分 类 号：O441.1[理学—电磁学]