摘要
分析了惠斯登电桥测量电阻的灵敏度问题,推导出电桥灵敏度与电源电压、检流计灵敏度、总阻值和比例臂电阻有关。并针对传统的惠斯登电桥测电阻实验装置存在的不足,研制出了立体式电桥实验仪,实验结果表明能够有效提高测量精度。
By exploring the sensitivity of Wheatstonc bridge, it is related to the supply voltage,the galvanometer, the total resistance value and the resistance value of ratio arm. In order to avoid the deficiency of traditional Wheatstone bridge in the measurement of resistance, a new Stereo electric bridge experimental instrument is developed. It is shoving that the accuracy of measurement could be improved.
出处
《科技视界》
2015年第30期172-172,168,共2页
Science & Technology Vision
关键词
惠斯登电桥
检流计
灵敏度
电动势
Wheatstone bridge
Galvanometer
Sensitivity
Electromotive force
作者简介
李伟（1983-），男，仲恺农业工程学院，讲师，研究方向为光学。
