电路短路在电器设备中一般是绝对不允许的,轻者损坏电器的电源整流元器件,重者会引起电器烧毁,引燃导线造成电气火灾,因此在电路中都有着防止短路造成危害的保护装置。最简单的就是保险丝,装在一只细长的玻璃管内,俗称:保险管。一旦电路短路在引起危害之前,保险丝首先熔断,切断电路,停止电器工作。人们在检修电器电路时,会看到保险管 Short circuit in electrical equipment is generally not allowed, the lighter damage to electrical power rectifier components, the weight will cause electrical burned, igniting lead wire electrical fire, so in the circuit has to prevent the harm caused by the short circuit protection device . The simplest is the fuse, installed in a slender glass tube, commonly known as: fuse. Once the circuit is short-circuited before it causes the hazard, the fuse blows first, disconnects the circuit and stops the electrical work. People in the maintenance of electrical circuits, you will see the fuse