静电高压发生装置(范得格拉夫起电机)是一种能产生高电压的起电机,见下图.在教学中使用这种起电机来演示各种静电现象,例如静电感应,气体的导电性、电力线、静电除尘等实验,效果明显,并由于防潮性能较好,深受欢迎.但在使用中,由于尘埃和潮湿等原因,可能发生起电效果下降的问题.现将其产生的原因和修理方法介绍如下,供参考. The electrostatic high voltage generating device (Van Grafkin motor) is a starting motor that can generate high voltage, see the figure below. This starting motor is used in teaching to demonstrate various electrostatic phenomena such as electrostatic induction, gas conductivity, Experiments on power lines, electrostatic precipitators, and other tests have obvious effects, and they are popular because of their good moisture resistance. However, in use, due to dust and moisture, there may be a problem that the electrification effect is degraded. The reason and repair are now occurring. Methods are described below for reference.