LED毫伏级待测电动势实验仪的设计及其稳定性的研究  

The Design of an Experimental Apparatus of LED Millivolt Level Electromotive Force to be Measured and the Research of Stability

作　　者：李广英[1] 赵雪[1] 仇三东 李景奎[1] 

机构地区：[1]东北林业大学,哈尔滨150040

出　　处：《大学物理实验》2013年第6期45-47,共3页Physical Experiment of College

基　　金：国家大学生创新性实验计划资助项目(201310225030)

摘　　要：为了满足电位差计实验对毫伏级待测电动势需求,设计了LED毫伏级待测电动势实验仪,并对其稳定性进行了研究。待测电动势实验仪是通过光电转换来实现的,输出的毫伏级电动势在电位差计实验仪的各个测量点都能稳定,能够满足箱式电位差计测量范围和精度要求,是比较理想的箱式电位差计实验配套仪器,能够大大提高学生的实验效率和教师对实验设计的选择性,实验效果良好。In order to satisfy the potentiometer experiment＇s demand for millivolt level electromotive force to be measured, we designed an experimental apparatus of LED millivolt level electromotive force to be measured and studied its stability. The experimental apparatus is achieved by photoelectric conversion. Output of millivolt level electromotive force can be stable in every measurement point of experimental apparatus, and the experimental apparatus can satisfy the box-type potentiometer~ s measurement range and accuracy requirements. The experimental apparatus of LED millivolt level e- lectromotive force to be measured is an ideal corollary equipment of box-type potentiometer experi- ment,which can greatly improve the students~ experimental efficiency and teachers~ selectivity for ex- perimental design, and the experimental effect is good.

关 键 词：LED 待测电动势 电位差计 毫伏级 光电转换 

分 类 号：O4-33[理学—物理]