The advanced pulse is used for thin sheets and edge work. It oscillates between AC and DC- during each half of the pulse cycle.(AC= high and DC= low or base amps.) It is a little odd sounding, but works nicely with nice gains in speed in DC- without overheating the metal, and providing enough cleaning from the AC to keep moving forward in the etched area when the DC hits. . I am not sure why it is limited on AC, other than the limits of the machine design and the advanced pulsing. We definitely have asked for more in the future, but this is probably the distant future. Under testing by several people having the slower pulse for AC never has seemed to be an issue. I have an issue more in the 20 hz range than the 10 when I weld. 10 and under seems fine. I get a little woozy around the 20 mark.




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