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Home / Welding / Power Sources

Power Sources

A welding power supply provides an electric current for welding. A constant current (CC) machine varies output voltage to maintain a steady current, while a constant voltage (CV) machine fluctuates output current to maintain a set voltage. Shielded metal arc welding (SMAW) and gas tungsten arc welding (GTAW) use a CC source, and gas metal arc welding (GMAW) and flux-cored arc welding (FCAW) typically use CV sources, though constant current is also possible with a voltage sensing wire feeder.

Five Best Practices for Multi-Material Welding in Manufacturing

To stay competitive, more shops face the challenges of welding many different types of materials. To reduce setup times and help their operators produce high-quality welds, they must move beyond basic options and invest in advanced capabilities that can have a big impact on the bottom line.

Power Sources: Articles

Five Best Practices for Multi-Material Welding in Manufacturing

To stay competitive, more shops face the challenges of welding many different types of materials. To reduce setup times and help their operators produce high-quality welds, they must move beyond basic options and invest in advanced capabilities that can have a big impact on the bottom line.

To stay competitive, more shops face the challenges of welding many different...

Switching Polarity in Welding Applications

When competing for time-critical jobs, saving even a few minutes with each changeover can make a significant difference and reduce operator exposure to trip and fall hazards. Investing in technology that allows welders to easily change processes with the push of a button at the weld joint can save substantial time, increase weld quality and improve operator safety.

When competing for time-critical jobs, saving even a few minutes with each...

Is Pulsed MIG Welding Right for Your Operation?

With Video

Do you need faster travel speeds, reduced spatter levels and improved control over arc starts to boost efficiencies or improve your MIG weld quality? With some training and a little practice, pulsed MIG welding can drive the improvements you need. Here are some factors to consider whether it is a good alternative for your operation.

Do you need faster travel speeds, reduced spatter levels and improved control...

Gain Advanced Capabilities with a Versatile Multiprocess Welder

With Video

The need to weld many different material types and use different welding processes is increasing on the jobsite and in the shop. The ability to weld most any material – anywhere – with one lightweight, portable welding system that delivers industrial-level output can provide significant benefits for productivity, efficiency, and profitability.

The need to weld many different material types and use different welding...
Power Sources: Products

Heavy-Duty MIG Guns Perform at 100% Duty Cycle

Four Magnum PRO Curve HDE semiautomatic welding guns from Lincoln Electric provide the best of both worlds: They deliver the highest duty cycle in their class and maximize operator comfort with a new ergonomic design.

Four Magnum PRO Curve HDE semiautomatic welding guns from Lincoln Electric provide...

Engine-Driven Welder Enables Simultaneous Welds

Lincoln Electric’s Dual Maverick 200/200X is two welders powered by one diesel engine with two outputs, allowing two or more welders to work at the same time. Output remains steady even during arc stops and starts in dual mode.

Lincoln Electric’s Dual Maverick 200/200X is two welders powered by one diesel...

Achieve a More Stable Arc with New Welder

Miller’s 300 TIG welding power source delivers ease of use and productivity benefits.

Miller's 300 TIG welding power source delivers ease of use and productivity benefits.
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