Transistor power supply is a new type of welding power supply in the field of precision welding. It is a high-frequency welding power supply with high control accuracy of welding time, stable current output, low ripple, and strong anti-interference ability. Transistor welding power supply is mainly used in the precision welding of electronic components and power batteries for automobiles. With the development of new energy industry, more and more power systems are adopting new energy to replace gasoline, coal and other fuels.