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  • #16
    I don't know if miller does anything fancy like that, or they just absorb any transients. There's a whole snubber section mounted to the polarity igbts on the dynasty I worked on. I wish I could get schematics for things I fix...

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    • #17
      You can find the Dynasty DX technical manual online, which has a schematic of the IGBT inverter snubber. Instead of an RCD, it has a pretty complex circuit that feeds the energy back into the input buss capacitors. The Dynasty 200 had an interesting snubber - with an inductor in it too. Somehow, I ended up with a WSE200 schematic, which shows its snubber - basically an RCD, plus it has an active clamp, which is an IGBT with a beefy, low resistance resistor and an IGBT. The IGBT is triggered by a 130V TVS, so it clamps at about 135V. If you look in a Thermal Arc 300 Pro Wave manual, you can see the components, which shows an active filter.

      This guy made his own output inverter. I have bought the parts from eBay for the right price over a long time, just need to finally get around to it..

      http://igor.chudov.com/projects/Home...o-AC-Inverter/

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      • #18
        I’ve never measured a dynasty DX transient response either.

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        • #19
          I recently got a load bank... I might need to do some tests to settle this, even though I wasn't planning on actually making any independent en/ep control boxes!

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          • #20
            One reason I’ve never tested for a transient response is because I don’t know what that is.

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            • #21
              One such test to get a transient response is with a bologna sandwich

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              • #22
                I like bologna.

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                • #23
                  Originally posted by ryanjones2150 View Post
                  I like bologna.
                  Just try to not be full of it...
                  Richard
                  West coast of Florida

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                  • #24
                    Ryan, it's when you hit the gas at the tree with no trans brake...

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                    • #25
                      Vrooom!!

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