If you ever try a fronius or an ESAB inverter three phase stick welder you'll be amazed.
High frequency about 500 hz as apposed to 50 that is why they sizzle and squealWhy are engine drive welders so good? At the end of the day they are basically a generator/transformer powered by an engine with no electronic trickery, why are they so smooth?
I have never used that first set, perhaps it was bobbins? Seriously contracting in Jan I was swapping from Lincoln. Miller. Esab and one I can't remember and no great difference or rather any I noticed other than I didn't have to drag one aboutReally? I have, when I went from a inverter fusion to a fronius transpocket it was a world of difference, then when I used an ESAB at
I don't know about the other stuff but this claim smells strongly of snake oil.HFDC also improves the ability of the welding cable to transmit DC welding power from the generator to your electrode -- reducing the effects of welding cable DC resistance and internal impedance -- allowing us, of a given welder, to use welding cable with a smaller cross sectional diameter than would other be necessary for proper welder performance
OH they must be wrong then http://www.sgs-engineering.com/sw200ac-welder-petrol-generatorHow can they have a higher Hz @normspanners engine drives put out DC current. Not AC
Well you asked a question and I gave a few answers, I am not bothered if you dont like the answer quite a few various welders employ HFDC now.
IIRC it is not a circuit persay in the old midgets for instance it is the fact they are an alternator which is chopping the dc when rectified some say it is that action of that pulse that keeps the weld puddle free of contaminationI think the point of the high frequency chopper circuit is that it is able compensate for fluctuations in engine speed whilst presenting an output that is, to all intents and purposes, pure d.c.