论文部分内容阅读
一、地线概念及故障实例“地线”是电子线路中非常重要的概念,它是一个相对概念,我们知道:一个大的电路是由若干个小的单元电路组成的,而若干个单元电路都有一个共用的“地”,这就是我们通常所说的“地线”或叫“地”。家用电器常用220V交流供电,在交流市电向家用电器提供电源的时候也有一个“地线”,若我们不小心接触到了交流电源,就会通过人体形成电流,产生触电事故,而我们的家用电器大部分使用交流电源,为了
First, the concept of ground and fault examples “ground” is a very important concept in electronic circuits, it is a relative concept, we know: a large circuit is composed of a number of small unit circuits, and a number of unit circuits Have a common “ground”, which is what we usually call “ground” or “ground.” Household appliances commonly used 220V AC power supply, AC power supply to home appliances when there is a “ground”, if we accidentally come into contact with the AC power, it will form a current through the body, resulting in electric shock, and our household appliances Most use AC power, in order to