Inverter welders use electronic components such as MOSFETs (Metal-Oxide-Semiconductor Field-Effect Transistors) to convert incoming AC power into high-frequency AC power. This high-frequency AC power is then rectified back into DC power using diodes. The DC power is then used for welding.
Inverter welders have several advantages over traditional welding machines. They are more efficient, lighter, and more portable than traditional welding machines. They also offer better control over the welding arc and output characteristics.