冲击电流计的灵敏度高,它不能直接用来测电流,只能用来测量短时间内脉冲电流迁移的电量。所以当实验者怀疑冲击电流计有问题时,不能直接用万用表来检查,而只能采用其它的方法。这给实验者带来很大的不便。 本文介绍一种快速检查冲击电流计是否损坏的方法,方便实用,可节省实验者的时间。方法如下,将冲击电流计的两接线端从所接的线路上拆下,用干净的纸或布擦干净。然后将两端接触放入口中或与稍热的物体接触。如果这时 Impulse meter has high sensitivity, it can not be directly used to measure current, can only be used to measure the short-time pulse current migration of electricity. So when the experimenter suspects that there is a problem with the galvanometer, it cannot be checked directly with a multimeter, but only with other methods. This caused great inconvenience to the experimenter. This article describes a quick way to check if the galvanometer is damaged. It is convenient and practical, saving the experimenter’s time. The method is as follows. Remove the two terminals of the ammeter from the connected circuit and clean it with clean paper or cloth. Then touch both ends in the mouth or in contact with a slightly hot object. If this time