This might come in handy on your next automotive project. Here is an extensive thread on how to build a TIG welder using scavenged parts. The setup uses a 130 amp alternator connected to an air ...

The Premier Power Welder uses a specially crafted alternator mounted on your engine so you can weld nearly anything, anywhere, at any time.

The high-frequency aspect of the welder is due to the fact that an alternator switches electrical flow thousands of times a second, instead of 60 times a second as in normal household electricity ...