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作为一种卓有实效的直观教具,电路示教板在物理教学的演示实验中,有着相当广泛的应用。如果分析一下在物理课堂上较常演示的电路,我们就会清楚地看出,大多数电路都是比较简单的,而且在不同电路之间多少总有一些相同或类似的地方,例如一般地说: 1.对于电路中的电源而言,每个电路都是闭合的; 2.电路中的各个仪器和元件的相互连接,不是串联,就是并联,或者是二者的某种简单的组合; 3.有不少仪器、元件和材料,例如电源、导线、开关、插座和电表等,可以用于很多个不同的电路中;换句话说,这些器件和材料是具有公用性的。
As a practical visual aids, circuit teaching board in physics teaching demonstration experiment, has a very wide range of applications. If we look at the circuits that are more often demonstrated in physical classes, we can clearly see that most circuits are relatively simple and there are always some of them that are the same or similar in different circuits, for example, : 1. For the power supply in the circuit, each circuit is closed; 2. The interconnection of the various instruments and components in the circuit, either in series, or in parallel, or some simple combination of the two; 3 There are many instruments, components, and materials such as power supplies, wires, switches, sockets, and power meters that can be used in many different circuits; in other words, these devices and materials are commonplace.