Homemade TIG DC to AC Inverter ==> Prototype 1

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Here you see my first working prototype of the IGBT based TIG inverter. Again, this is an add on inverter for making Advanced Square Wave AC from DC supplied by my hobart cybertig welding machine.

Some highlights (see schematic page for component info:

I feel that this is a nice milestone in my project. I feel that I have, in principle, proven that I can get to the completion of the project. All I now need is not to fuck anything up. To that effect, I should make a nice snubber circuit and err on the side of overbuilding that snubber. I should manufactore an enclosure that provides proper mounting, vibration protection and cooling. After that, I should make sure that front panel controls are properly installed and are protected from EMI.


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