UJ31型电位差计实验设备的改进  

Improvement of Potentiometer Experimental Equipment of UJ31

作　　者：王婷[1] 孙小伟[1] 宋婷[1] 权伟龙[1] 

机构地区：[1]兰州交通大学数理学院,兰州730070

出　　处：《实验科学与技术》2015年第5期16-17,28,共3页Experiment Science and Technology

基　　金：国家自然科学基金(11164013);兰州交通大学实验教学改革基金(2014 228)

摘　　要：电位差计利用补偿法原理工作,常被用于精确测量电动势、电压、电流、电阻等电学量。实际教学过程中发现,使用UJ31型电位差计时,由于学生对附件设备——机械式检流计的使用不能很好掌握,导致测试结果误差较大。经过探讨、论证发现,用数字仪表替代机械式检流计,效果良好。Using the compensation method principle,the potentiometer is used to precisely measure the electromotive force,electrical quantities such as voltage,current and resistance.During the actual teaching process,the test error of result is bigger because of the use of accessory equipment mechanical galvanometer cannot grasp well when students use the type UJ31 potential difference.The result is better when the attachment equipment mechanical galvanometer substitute digital instrument by discussion and demonstrate.

关 键 词：补偿法 UJ31 型电位差计 指针式检流计 数字仪表 

分 类 号：O441.1[理学—电磁学]