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在高中阶段,滑动变阻器的连接一般有两种方法,即限流法与分压法。很多学生不容易掌握这两种连接法的特点与应用,本文笔者根据自己多年的教学经验对此进行了探析。一、限流法与分压法的电路图二、限流法的特点如上图(a)所示,将滑动变阻器与其他用电器串联在电路中(只连接两个接线柱),这种连接方法叫滑动变阻器限流法。这种连接方法的特点是:
In the high school stage, there are generally two methods for the connection of the sliding rheostat, namely the current limiting method and the partial pressure method. Many students are not easy to grasp the characteristics and applications of these two connection methods. The author explores this in light of his many years of teaching experience. First, the current limiting method and partial pressure circuit diagram II, the characteristics of the current limiting method as shown in Figure (a) below, the sliding rheostat and other appliances in series in the circuit (only connect two terminals), this connection method The sliding rheostat current limiting method. The characteristics of this connection method are: