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WTB: miller tc-150 dc converter for ac thunderbolt welder

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  • WTB: miller tc-150 dc converter for ac thunderbolt welder

    Made of Unobtanium, evidently, but please help if you can!
    Is there a schematic so I could try and imitate/build one? I can find a 200A bridge rectifier, but the TC-150 has a transformer in it.
    does it need a filter cap, say 47,000 uf 100V?

  • #2
    The schematic is in the manual:
    https://www.millerwelds.com/files/ow...uals/O509B.pdf

    You can probably steal a random stabilizer inductor out of any similarly-sized dc welding machine if you end up building one. Of course, if you get a random dc welding machine for parts, might be easier to just fix it...

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    • #3
      I have a TC-150, but it’s made out of notforsalium. Sorry.

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      • #4
        I have seen a lot of youtube videos and posts on other sites. Here is one. In the end, the guy bought an inverter welder.

        http://www.hildstrom.com/projects/ac-225/index.html

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        • #5
          Here is some info on making your own or buying one from ebay.


          https://bbs.homeshopmachinist.net/fo...rs-for-welders

          https://www.ebay.com/itm/RoMan-RGR-2...SIAAOSwlixfLxM K

          https://www.ebay.com/itm/1PC-SGK-012...owAAOSwNyRfJ5~ 8
          Miller Dynasty 350, Dynasty 210 DX, Hypertherm 1000, Thermal Arc GTSW400, Airco Heliwelder II, oxy-fuel setup, metal cutting bandsaw, air compressor, drill press, large first aid kit, etc.

          Call me the "Clouseau" of welding !

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          • #6
            With nice Thunderbolt AC/DC examples selling for $300 pretty regularly, why bother modifying an AC model? You can probably get $150 for the AC machine so it would only cost $150 or so...seems like a much easier path.

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            • #7
              This falls under "why bother" for me too. I'd rather buy a proper welder with it built in. Unless it's a hobby thing, Time is money, spending some money to save time it worth it.

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              • #8
                Could be the welder has sentimental value, like one a parent left them or such...

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                • #9
                  Bought one, in "new" condition, except the plugs were missing. Anybody actually use one? How does it compare to say a thunderbolt XL AC/DC?

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                  • #10
                    What are you asking? I use my old thunderbolt buzz box and tc-150 occasionally at the other shop. It works fine. Nothing that would convince me that equipment would be making a resurgence in popularity for some reason though.

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