Chronometer time minus watch time Kelvin bridge ohmmeter 天文钟时间减钟表时间凯尔文电桥式电阻表
In order to avoid the effect of lead resistance and contact resistance in measuring low resistance with DC Wheatstone Bridge, DC Kelvin Bridge is usually used to measure the value of low resistance. 为了避免导线电阻和接线端的接触电阻对直流电桥测量低电阻的测量结果产生较大误差,采用凯尔文直流双臂电桥测量低电阻的阻值。
Advanced digital Kelvin bridge 高级数字式开尔文电桥
The design principle, former faceplate and applications of digital Kelvin bridge are expatiated. 阐述了高级数字式开尔文电桥的设计原理、前面板及实际应用。
However, when measuring micro resistance, Kelvin bridge method which is used to measuring low resistance is not applicable. So we need a system to measure micro resistance. 但是,在测量微电阻时,常用的测量小电阻的开尔文电桥就无法满足要求,所以需要一种测量微电阻的系统。