双电桥测低电阻研究

The Research of Measuring Low Resistance by Double Arm Bridge

用双电桥测低电阻，传统的方法是采用电压内接法而排斥电压外接法．通过实验数据、电路分析，得出了用双电桥测低电阻时，无论采用电压接头内接法还是外接法，电阻测量值均不变的结论．

Traditionally, measuring low resistance by double arm bridge was made with the voltage jointers being linked inside other than that being linked outside. By dissecting the data of experiment and the circuit, this article infers that when the low resistance is measured by double arm bridge, whether the two voltage jointers are linked inside or outside, the measured value would be the same.