Argh! Must buy new welder.... Must buy....

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I hate when something I want is discontinued - it makes me go buy one before they disappear. I'm now the proud owner of a Hobart Ironman 230.I looked at the new Ironman 240, and I did note that the 240 specs were very close to the Miller 252 which was interesting. But for me simple beats complicated; I prefer taps over one more circuit board to fail. The other thing that swayed me is that the new 240 spec sheet had this note (where the 230 did not):"Note: Running off of generator power is not recommended for the IronMan 240."I don't like limitations like this, particularly since I've had to run off generators before. Sometimes it's just more convenient than a REALLY long extension cord. I wonder if this is a function of the infinitely variable voltage system on the 240?BTW - does anyone know how the infinitely variable voltage output systems actually work? I'm wondering if its an inductance or phase control type system. I ask this because I noted that the KVA of the 252 and new 240 are MUCH higher than the 230. The 230 has a KVA of 7.4 for an output of 6.3KW (85%),  while the 240/252 has a KVA 11.4 for an output of 7.1KW (62%). It seems that the power factor on the 230 is much better at rated load than the 240/252, and the only thing I can think of is if they are somehow manipulating input voltage/current phase on the 240/252 as a means of controlling output voltage.Anyone know what's going on here?Just curious.BeufordLast edited by Beuford; 08-06-2020 at 11:36 PM.
Reply:Inverter VS Transformer? That is NOT a statement, I don't know.An optimist is usually wrong, and when the unexpected happens is unprepared. A pessimist is usually right, when wrong, is delighted, and well prepared.
Reply:

Originally Posted by Willie B

Inverter VS Transformer? That is NOT a statement, I don't know.
Reply:I believe it is phase angle controlled or a combined phase angle/zero current crossover controlled firing pattern. Just my wild *** guess though.http://www.freepatentsonline.com/3883714.htmlMiller Multimatic 255
Reply:interesting that the IM240 states that about running off a generator but the MM252 does not.I've run my Mm252 off of a Honda EU 6500Ed Conleyhttp://www.screamingbroccoli.com/MM252MM211 (Sold)Passport Plus & Spool gunLincoln SP135 Plus- (Gone to a good home)Klutch 120v Plasma cutterSO 2020 benderBeer in the fridge