Groups > sci.electronics.design > #453928

Re: tig hi freq

From	Hul Tytus <ht@panix.com>
Newsgroups	sci.electronics.design
Subject	Re: tig hi freq
Date	2017-03-27 23:07 +0000
Organization	PANIX Public Access Internet and UNIX, NYC
Message-ID	<obc5vf$h9j$4@reader1.panix.com> (permalink)
References	<obb6u4$gih$1@reader1.panix.com> <67SdnTyr9LXv_ETFnZ2dnUU7-YXNnZ2d@giganews.com>

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Jon - any suggestions on which of the newer tig welders has the more 
modern hi freq drive?

Hul

Jon Elson <jmelson@wustl.edu> wrote:
> Hul Tytus wrote:

> > sci.electronics.design
> > tig high freq
> > 
> >    Does anyone here know what the frequency & initial voltage is of the
> >    "high
> > freq ac" used in TIG welders? Google's offerings seem to favor client's
> > advertising and "how to weld" documents, unfortunantly.
> The typical setup on older welders is a spark gap Tesla coil, so there is no 
> control of frequency.  A several thousand Volt transformer charges a 
> capacitor at 60 Hz frequency, that voltage creates sparks that dump the 
> capacitor into the Tesla coil primary.  So, the output is generally bursts 
> of 10-20 KHz spikes repeated at 120 Hz.

> Some newer welders have electronic drive for this, so they have a defined 
> frequency.

> The HF on a TIG welder ought to be at least 10 KV, and maybe up to 20 KV.

> Jon

Thread

tig hi freq Hul Tytus <ht@panix.com> - 2017-03-27 14:17 +0000
  Re: tig hi freq George Herold <gherold@teachspin.com> - 2017-03-27 08:00 -0700
    Re: tig hi freq Hul Tytus <ht@panix.com> - 2017-03-27 16:15 +0000
      Re: tig hi freq tabbypurr@gmail.com - 2017-03-27 09:40 -0700
      Re: tig hi freq Lasse Langwadt Christensen <langwadt@fonz.dk> - 2017-03-27 09:45 -0700
        Re: tig hi freq Bill Martin <wwm@wwmartin.net> - 2017-03-27 10:24 -0700
          Re: tig hi freq Neon John <no@never.com> - 2017-03-31 15:27 -0400
            Re: tig hi freq Bill Martin <wwm@wwmartin.net> - 2017-03-31 14:42 -0700
      Re: tig hi freq "dcaster@krl.org" <dcaster@krl.org> - 2017-03-27 11:22 -0700
      Re: tig hi freq George Herold <gherold@teachspin.com> - 2017-03-27 11:37 -0700
    Re: tig hi freq Neon John <no@never.com> - 2017-03-31 15:01 -0400
  Re: tig hi freq Tim Wescott <tim@seemywebsite.com> - 2017-03-27 12:19 -0500
    Re: tig hi freq "dcaster@krl.org" <dcaster@krl.org> - 2017-03-27 11:15 -0700
      Re: tig hi freq Hul Tytus <ht@panix.com> - 2017-03-27 22:56 +0000
    Re: tig hi freq amdx <nojunk@knology.net> - 2017-03-27 14:54 -0500
    Re: tig hi freq Hul Tytus <ht@panix.com> - 2017-03-27 22:55 +0000
  Re: tig hi freq Cursitor Doom <curd@notformail.com> - 2017-03-27 18:33 +0000
    Re: tig hi freq Hul Tytus <ht@panix.com> - 2017-03-27 22:57 +0000
      Re: tig hi freq Chris Jones <lugnut808@spam.yahoo.com> - 2017-03-28 18:07 +1100
        Re: tig hi freq Neon John <no@never.com> - 2017-03-31 15:50 -0400
  Re: tig hi freq Jon Elson <jmelson@wustl.edu> - 2017-03-27 14:02 -0500
    Re: tig hi freq Hul Tytus <ht@panix.com> - 2017-03-27 23:07 +0000
      Re: tig hi freq Jon Elson <jmelson@wustl.edu> - 2017-03-28 13:51 -0500
        Re: tig hi freq Hul Tytus <ht@panix.com> - 2017-03-28 22:04 +0000
          Re: tig hi freq sroberts6328@gmail.com - 2017-03-29 06:55 -0700
            Re: tig hi freq sroberts6328@gmail.com - 2017-03-29 07:01 -0700
              Re: tig hi freq sroberts6328@gmail.com - 2017-03-29 07:15 -0700
                Re: tig hi freq Hul Tytus <ht@panix.com> - 2017-03-29 15:05 +0000
    Re: tig hi freq Neon John <no@never.com> - 2017-03-31 15:35 -0400

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