自制感抗影响因素演示仪  

Self-made demonstrator of influence factors on inductive reactance

作　　者：王震[1] 赵雨曦 丁永文[1] WANG Zhen;ZHAO Yu-xi;DING Yong-wen(School of Physics and Electronic Technology,Liaoning Normal University,Dalian 116029,China)

机构地区：[1]辽宁师范大学物理与电子技术学院,辽宁大连116029

出　　处：《物理实验》2020年第9期58-60,共3页Physics Experimentation

基　　金：2018年辽宁省普通高等教育本科教学改革研究项目(辽教函[2018]471号)。

摘　　要：利用自制的实验仪器,探究了影响感抗的因素.通过手机输出不同频率的音频信号,经过电感到达扬声器,利用平板电脑内音频分析软件实时测量声音响度.将声音信号转化为图像,通过图像的幅值观察声音响度,学生能够直观地认识电感器对交变电流的阻碍作用.The influence factors on inductive reactance were investigated by a self-made demonstrator.Audio signals of different frequencies were created using a smart phone and transmitted to a loudspeaker through inductance.The sound loudness was measured in real-time by the audio analysis software in an iPad.By converting the sound signal into an image and observing the loudness of the sound through the amplitude,students could intuitively understand the blocking effect of inductor on alternating current.

关 键 词：感抗 电感 交变电流 响度 

分 类 号：G633.7[文化科学—教育学]