In snooping for some information on another little gadget I am working on, I came across an application note for "AC TIG Welding: Output Inverter Design Basics". I have seen several discussions in the past here about the inverter design and thought some people might be interested. Here is a link to a pdf document at International Rectifier on the subject if anyone is interested in reading up on it (the nerdy details as it were ... )
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And a whole list of other app notes that may also be of interest to people playing with power control of "stuff"
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mikey