直流数字毫伏表作平衡指示仪的电桥灵敏度  

Bridge Sensitivity with DC Digital Millivolt Meter as Balance Indicator

作　　者：山灵芳[1] 

机构地区：[1]河南教育学院物理系,河南郑州450046

出　　处：《河南教育学院学报（自然科学版）》2012年第4期18-19,共2页Journal of Henan Institute of Education(Natural Science Edition)

基　　金：河南省科技攻关重点项目(122102210146)

摘　　要：惠斯通电桥测量电阻是基本而重要的一个实验,电桥灵敏度决定着测量结果的精确程度.针对直流数字毫伏表作平衡指示仪的情况,给出电桥灵敏度公式,分析提高灵敏度的方法.Measuring resistance by Wheatstone Bridge was a basic and important experiment. The sensitivity of bridge determined the precision of measure results. Under the condition of using DC digital millivoh meter as bal-ance indicator situation, the formula of bridge sensitivity was given. The methods to improve the sensitivity were an-alyzed.

关 键 词：惠斯通电桥 灵敏度 电桥平衡状态 

分 类 号：O441.5[理学—电磁学]