摘要
从理论推导出了影响起灵敏度的因素,并且分析了惠斯通电桥灵敏度与电阻的搭配、桥臂阻值的选择之间的关系,将对提高电桥灵敏度及该实验教学起指导作用.
Wheatstone electric bridge is a precision instrument measured the resistance with the comparison test. Delicate degree of wheastone bridge is an important factor that effects its measurement precision. Along with the technical development, the sensitivity of Wheatstone electric bridge is requested to be more and more high. This article obtained the factors influencing the sensitivity of Wheatstone electric bridge from the aspect of theory, and discussed the relationship between sensitivity of bridge and resistance of arm of bridge and innerresistance of galvanometer. And this can enhance the surveying sensitivity, and benefit the improvement of delicate degree and the teaching of the experiment.
出处
《西南师范大学学报（自然科学版）》
CAS
CSCD
北大核心
2008年第4期149-152,共4页
Journal of Southwest China Normal University(Natural Science Edition)
关键词
惠斯登电桥
灵敏度
比例臂
电阻
Whenatstone electric bridge
sensitivity
proportional arms
resistance
