摘要
本文分析了自感暂态过程中自感电动势及电流的变化情况.指出了传统的自感现象演示仪的缺点.利用灵敏度比小电珠高得多的发光二极管代替小电珠,加上其他部件,制成了6.2EF型自感现象演示仪.利用它,可正确地、方便地演示自感电动势及电流的大小、方向,也可演示暂态过程中磁场的变化.
In this paper, we analyze the variation of self-inductive E. M. F. and current in the temporary process of self-induction,and designate the weakness of tradictional apparatus of self-induction demonstration. Replace the little bulb with an illuminative diode,whose sensitivity is higher than the little bulb,add the other parts,and then the appartus is completed. The apparatus can accurately and conveniently show the direction and magnitude of current and self-inductive E.M.F.and the magnetic variation.
出处
《江西师范大学学报（自然科学版）》
CAS
1991年第3期208-213,共6页
Journal of Jiangxi Normal University(Natural Science Edition)
关键词
自感
发光二极管
磁场
self-induction illuminative diode
magnetic variation
