This video is about tig welding aluminum on AC at 50hz and at 250hz.
there was a noticeable difference at the 2 different settings. 50hz got completed penetration and 250hz did not penetrate.
I tried to keep travel speed the same for both welds by using a motorized welding positioner turntable.
The current waveforms are advanced square wave, soft square wave, sine wave, and triangle wave.
They all have slightly different looks, sounds and characteristics.
Some waveforms are supposed to be better for thin metals, others for thicker metals.
There is another advanced feature on a very few...