1. The lead wire is connected to the power supply 220 or 380. The lead wire comes from the welding handle wire and ground wire

2, the welding machine is the use of positive and negative poles in an instant short circuit of high temperature arc to melt the welding materials and welding materials on the electrode, to achieve the purpose of contact.Its structure is very simple, is a high-power transformer.According to the type of output power supply, the welder can be generally divided into two types, one is ac power supply, the other is DC power supply.Using the principle of inductance, inductance can produce large voltage changes when switching.The high-pressure arc created by an instantaneous short circuit between the positive and negative electrodes will be used to melt the solder on the electrode to achieve the purpose of atomic bonding.