【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.更多还原

【Abstract】 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 millivolt meter as balance indicator situation,the formula of bridge sensitivity was given.The methods to improve the sensitivity were analyzed.更多还原