在现行的初高中物理课本或习题参考书中总能找到有关稍复杂电路(当然限于不含有星形和三角形网络的平面电路)的计算而涉及等效电路画法问题,此类题目往往使一些同学觉得难以掌握规律和方法,要不就是相当费时。经教学实践总结,我们可以通过注意以下要点而迅速地解答等效电路的画法。 In the current junior high school physics textbook or exercise reference book, you can always find calculations involving slightly more complicated circuits (of course limited to planar circuits that do not contain star and triangle networks) and involve equivalent circuit painting problems. These problems often make some Students feel that it is difficult to grasp the laws and methods, or it is quite time-consuming. After summarizing the teaching practice, we can quickly solve the drawing of the equivalent circuit by paying attention to the following points.