用直流双臂电桥测量电阻温度系数  

作　　者：董向成[1] 吴学勇[1] 陈建宏[1] 

机构地区：[1]兰州城市学院培黎工程技术学院,甘肃兰州730070

出　　处：《电子制作》2014年第13期220-221,共2页Practical Electronics

摘　　要：通过对大学物理实验中力学实验、热学实验及电磁学实验的综合,设计电阻温度系数的测量实验。通过测量导线的直径、质量计算出导线的长度,在改变温度条件下使用双臂电桥测量导线的电阻,利用测量数据通过线性拟合得到铜导线的电阻温度系数。Through comprehensive mechanics experiments, thermal experiments and electromagnetics experiment in university physics experiment, Design the measurement experiment of temperature coefficient of resistance. By measuring the diameter and length of the wire to calculate the mass, using two-arm bridge changing temperature conditions measure the resistance of the conductor, using the measured data, the wire resistance temperature coefficient obtained by linear fitting.

关 键 词：综合性实验 电阻温度系数 低电阻测量 精密称衡 

分 类 号：O4-4[理学—物理] G642[文化科学—高等教育学]