: On Wed, 5 Nov 2003 03:01:44 +0000 (UTC), email@example.com wrote:
:>I wonder if you could tap ahead of the diodes for ac tig.
: Auto alternators are typically 6 phase. Welding is inherently a single
: phase process. Or put another way, which wires would you use as the
: ground electrode, and which the stinger? You'd have 7 to choose from,
: but each is only capable of handling 1/6th of the output of the alternator.
: The only way to combine them is to first rectify to DC, then they can
: be ganged together to deliver full output. (DC adds directly, but AC
: has to be *in phase* to add directly.)
I always thought they used 3 phase, delta into a full wave bridge. Six diodes,
three to ground, three to positive out. But then it's been a while since I
opened one up. Is this something currently done?
But in any event, you are right. You can't add them together.