Can any body help ime after a circuit diagram for a mig welder doesnt matter which one as long as its single faze??
Want to know how they stop the rectifier/s blowing up when you strike the arc? as its a short citcuit??,,,
As long as the diodes in the rectifier exceed, by a small or large amount, the current supplied from the transformer then they should never blow...
A MIG is similar to an arc welder except that a wire is constantly fed into the weld maintaining constant voltage with gas supplied to shield it...
The wire speed is used to adjust current, the faster the wire speed the more current that can flow...
Metal oxide varistors and inductors can be used to smooth out the arc...
The whole working principal relies on a "short circuit", the circuit is made and a lot of current flows, the wire melts, it breaks and then it repeats...
MIG, the short-circuit current is about 6x the average. That time is short and the rectifiers can handle it. Just a simple transformer/rectifier and maybe some filter caps.