摘要
利用低压电源供电来研究制作的电阻、电感和电容分别对交流电和直流电的作用情况的演示仪,改变了过去一直用高压电220V电源供电的做法,增加了安全系数,同时也改变了过去那种庞大、笨重的仪器设备,使仪器变得轻巧、玲珑,操作起来既安全又方便,演示效果很好。
This thesis talks on the study and creation of the demonstrating instrument which show the effect that resistance inductance and capacitance have on alternate current and direct current with low - pressure electricity. The writer adapts the way of electricity -supplying which used to be supplied by 220V power to a secure one. Meanwhile, it also lighten and ease the devices which were large and heavy before. It is easy and safe to operate and the effect of demonstration is pretty good.
