초록 ▼

An arc welding machine is disclosed for providing a continuous feed electrode to a weld site. The arc welding machine includes a line frequency transformer having a primary winding, a first secondary winding, and a second secondary winding (e.g., an extension winding, a separate winding, etc.). The

An arc welding machine is disclosed for providing a continuous feed electrode to a weld site. The arc welding machine includes a line frequency transformer having a primary winding, a first secondary winding, and a second secondary winding (e.g., an extension winding, a separate winding, etc.). The first secondary winding provides a welding power having a first voltage at a welding power output terminal. The second secondary winding provides a second welding power having a second higher voltage at an input terminal of a switch, the switch being controlled to provide a pulsed power at the welding power output terminal. According to one feature, the arc welding machine produces a pulsed power having a fixed pulse width and a fixed frequency, the fixed pulse width and fixed frequency being substantially free of operator adjustment.

대표청구항 ▼

[What is claimed is:] [1.]an operator control having at least two positions; anda line frequency transformer having a primary winding, a first secondary winding to provide a first welding power having a first voltage at a welding power output terminal, wherein the first welding power is sufficient f

[What is claimed is:] [1.]an operator control having at least two positions; anda line frequency transformer having a primary winding, a first secondary winding to provide a first welding power having a first voltage at a welding power output terminal, wherein the first welding power is sufficient for a first welding operation when the operator control is in a first position, and a second secondary winding to provide a second welding power having a second higher voltage at an input terminal of a switch, said switch being controlled to provide a pulsed power at the welding power output terminal.