开尔文四线测试方式在PCB测试机中的应用

摘要

分析了PCB测试机中的普通二线式测试原理、开尔文（Kelvin）四线测量方法原理，介绍了开尔文四线测量方法的优点。%This report aimed to analyze the two-wire and four-wire kelvin measurement principle in PCB testing machine , discused the advantage of Kelvin Four-Wire Testing method in PCB testing.