对于由无数个相同的网格组成的直线型电阻网络,计算电阻的通常解法是采用“截断法”.所谓“截断法”就是设想从网络的端点处截去一个网格,因网格数为无数个,则剩下的电阻网络与原先的应是一样,再借助串并联电路的性质,就可求出网络的电阻值.下面的例1就是“截断法”的具体体现. For a linear resistive network consisting of an infinite number of identical meshes, the usual solution for calculating the resistance is to use the “truncation method.” The so-called “truncation method” assumes that a mesh is truncated from the end of the network because the number of meshes is In countless cases, the remaining resistor network is the same as the original one, and the resistance of the network can be calculated by the nature of the series-parallel circuit. The following example 1 is the concrete embodiment of the “truncation method”.