惠斯通电桥灵敏度的探讨

Exploring the Sensitivity of Wheatstone Electric Bridge

从电源电压、检流计灵敏度、检流计内阻、电源内阻、检流计和电源接入线路的位置、电桥桥臂参数等几个方面探讨分析了影响电桥灵敏度的各个因素,得出电桥灵敏度和各因素之间的关系,从而找出提高电桥灵敏度的方法。

There are many factors that influence the sensitivity of electric bridge. This article analyzed there factors: supply voltage, sensitivity of galvanometer, internal resistance of galvanometer, internal resistance of supply, on-position of galvanometer and supply circuit, parameters of brachium pontis, and so on. And then we derived the relation between the sensitivity and these factors. From the analyses, we found methods of improving the sensitivity of electric bridge. We also analyzed aberration of electric bridge.