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Re: Flyback Driver PCBs
Original poster: "Richard Modistach" <hambone-at-dodo-dot-com.au>
i've been flatout using all manner of welders since
1975, the best i've been able to get is 10% of
that and that was with a hobart-at- 300A and hf.
what type of welding machine is this that draws
12" arcs, or are we talking something other than
a standard atmosphere?
regards
richard
aus
----- Original Message -----
From: "Tesla list" <tesla-at-pupman-dot-com>
To: <tesla-at-pupman-dot-com>
Sent: Wednesday, April 14, 2004 10:37 PM
Subject: Re: Flyback Driver PCBs
> Original poster: "Malcolm Watts" <m.j.watts-at-massey.ac.nz>
>
> On 13 Apr 2004, at 18:01, Tesla list wrote:
>
> > Original poster: "Jim Mitchell" <electrontube-at-sbcglobal-dot-net>
> >
> > WHAT!? Kreso thats 6 & 1/2" arcs from a plasma globe flyback?! Those
> > things are tiny 1" cubes that go up in flames if you try to get more
> > then a few kV out of them!
> > Strangely I am suspicious. Do you have pictures?
> >
> > Regards - Jim Mitchell
>
> I can't say I am. As usual, power is the driver behind long arcs.
> Another example of a strong power dependency is an arc welder. The
> voltage is low by any standards but the available power allows one to
> draw arcs out over a foot long. Then there is that video of a
> switchyard breaker opening, courtesy of Bert Hickman......
>
> Malcolm
>
> > ----- Original Message -----
> > From: "Tesla list" <tesla-at-pupman-dot-com>
> > To: <tesla-at-pupman-dot-com>
> > Sent: Tuesday, April 13, 2004 9:51 AM
> > Subject: Re: Flyback Driver PCBs
> >
> >
> > > Original poster: Kreso Bukvic <kreso.bukvic-at-kc.htnet.hr>
> > >
> > > Now for me to spit somthing. I had gotten from small cheap
> > commercial
> > plasma
> > > globe flyback ~ 17 cm flaming arc. I was just keeping this for me
> > but il > give the word out. I was driving this flyback from PC SMPS
> > so i thinked
> > why
> > > we all use LV output of this small transformer? So i connected my
> > flyback > primary to primary of the transformer i gues there was
> > arround 300 VDC.
> > The
> > > flyback gaved 5 - 6 cm arcs now. After some head scratching i
> > realised
> > that
> > > SMPS transformer eated alot of power so i remowed it. After
> > turrning on i > realised thet the flyback is giving small arcs to air
> > (like Tesla coil). > Trying to pul an arc i realised it can make ~ 17
> > cm flaming arcs. I was > impressed . So i tried to connect big DC
> > flyback there and tried to pull a > spark at point of ~8 cm the
> > corona appeared but as soon the spark created > the mosfets blew i
> > think that wasn ot problem a wire hanged and shorted
> > the
> > > output. I never tried this experiment later ( need to build a
> > sstc.) > > I know all will call me a layer and wont bolive me, but
> > try it im NOT
> > lying
> > >
> > > The picture of the flyback can be seen here
> > > http://www.allthingstesla-dot-com/viewthread.php?tid=766&page=#pid6060
> > > > BTW the SMPS was AT 200 W > > Best Regards > > Kreso Bukvic > >
> >
> >
> >
>
>
>