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Re: Inside A Plasma Cutter (Must See Pictures for SSTCers!)
Original poster: John Keith <jskeith-at-interaccess-dot-com>
----- Original Message -----
From: "Tesla list" <tesla-at-pupman-dot-com>
Sent: Sunday, June 06, 2004 6:50 PM
Subject: Re: Inside A Plasma Cutter (Must See Pictures for SSTCers!)
> Original poster: "Jim Mitchell" <Electrontube-at-sbcglobal-dot-net>
> Well, It draws 30A at 240V. So Do the math and you see that its drawing
> 7.2kW max (I'm not sure if this is constant).
> Yes those two links are incorrect, Thanks for pointing that out.
> I believe those diodes aren't rectification, as the manual states "The
> output of this device is high voltage/high frequency...) And the +
> electrode goes right to the output transformer.
Yes, the diodes are for rectification. Plasma cutters are DC machines, the
high frequency is super-imposed on the DC to start the arc, just like a TIG