According to Ignoramus26924 :
On Thu, 22 Sep 2005 20:04:47 -0500, Wayne Cook wrote:
On Thu, 22 Sep 2005 17:04:48 GMT, Ignoramus26924
wrote:

Forgot to say, its transformer diagram seems to be triangular,
IIRC. It is a "three transformers and a rectifier" kind of welder. I
will double check this, I have all schematics.


Actually there's more to it than that. I bet if you open it you'll
find that the three transformers are all in one core. Then there's the
reactor which is used to control current. The reactor itself is
controlled with SCR's. After all of that then there's the diodes.

I doubt that they have the same core, otherwise they would be
basically all on one phase, transforming one another.

You haven't seen many three-phase transformers, then. Picture
the usual 'E' laminations, except a bit more widely spaced. One winding
goes around the normal center pole, and the other two go around the top
and bottom bars of the 'E'. The phasing is such that the fields merge
cleanly.

Take a look at what is physically inside your machine, and then
come back and say that it can't be done. :-)

Enjoy,
DoN.

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