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短路是用导线把电源的正负极直接连在一起或火线零线直接相连.在生产和生活中,一旦发生短路,轻则引起电路故障,重则烧毁电源,甚至引起火灾,所以,电源短路是绝对不允许的.而局部短路是用导线或开关把电路中的某个导体或用电器短接,使这个导体或用电器中没有电流通过.我们可以利用局部短路来达到一定的目的.
Short circuit is the direct connection of the positive and negative poles of the power supply with a wire or the direct connection of the live zero wire. In the production and life, in the event of a short circuit, the circuit fault is caused, and the power supply is burned or even caused a fire. Therefore, the power supply is short-circuited. It is absolutely not allowed. While partial short circuit is the use of wire or switch to short circuit a conductor or electrical appliances, so that there is no current through this conductor or consumer appliances. We can use local short circuit to achieve a certain purpose.