Thermal resistance in several different ways lead to online

Thermal resistance of main inlets can be divided into three different ways, one is a two wire system; Another is the 3 wire system; End is a 4 wire system; Below small make up together and to see the three different way to lead! Hope I can give you to learn more about the thermal resistance. A, 2 wire system: heat resistance on the row line is very simple, but need to error into the lead resistance, so it is not suitable for use in the precision is high heat resistance, and moreover, in the course of the use, whether wire or wires, are not suitable for too long. 2, 3 wire system: can eliminate the impact of lead resistance directly, but also on the accuracy of measurement are much higher than 2 wire system, mainly as a process of testing the components to use, so its use is very wide. Three, four wire system: not only can lead the resistance influence thoroughly eliminated, but also in the same connection of wire resistance, effective will completely eliminate the influence of resistance, if is need for more high precision measurement, small make up recommend can choose four wire system.