What type of power supply does GMAW use?

Gas Metal Arc Welding (GMAW), also known as MIG welding, typically uses a constant voltage power supply. This type of power supply maintains a steady voltage level, which is essential for producing a stable arc as the welding wire is continuously fed. The constant voltage ensures that the arc length remains consistent, which contributes to a smooth and efficient welding process. Additionally, some GMAW applications may use a constant current power supply, especially for specific materials or thicknesses.