Can you change a alternator from dc to ac ? I'm a mechanic and know of the diode that lets the current flow one way and not the other. but can you wire a alternator to produce ac current to run a drill? I know you can buy converters but I have been told there is a simple way to change the alternator. I was planning on powering a 100amp alt. with a 10hp. gas motor. Can someone tell me or give me a web site with the info.