Re: welding machine as a power supply

Yes Pete,

that is what I have done, I put 100 amp stud mount diodes on heat
sinks, not wired them because of lack of time.. so far..

I have pictures on photobucket
David..
http://img28.photobucket.com/albums/v85/ibewgypsie/dscn0114.jpg
http://img28.photobucket.com/albums/v85/ibewgypsie/dscn0115.jpg
http://img28.photobucket.com/albums/v85/ibewgypsie/dscn0116.jpg

I haven't tied all the wiring down yet, kinda messy, but I got 30 some
odd years of experience to straighten that out with..
I rewired it to match bridgeportio setup with EMC and not got it
installed or tried yet.. it runs great on turbocnc..

--- In CAD_CAM_EDM_DRO@yahoogroups.com, "Peter Reilley" <micrio@m...>
wrote:

> Perhaps a stupid question; If the diode bridge keeps blowing due to
> overload, why not just install a heavier unit? It is probably cheaper
> and easier to do that than add a complicated soft start circuit.
>
> Pete.
>
>
> ----- Original Message -----
> From: "ibewgypsie" <ibewgypsie@h...>
> To: <CAD_CAM_EDM_DRO@yahoogroups.com>
> Sent: Monday, March 22, 2004 5:04 AM
> Subject: [CAD_CAM_EDM_DRO] Re: welding machine as a power supply
>
>
> > Yep, pretty much what I was doing with my switch. Bypassing some 20
> > ohm resistors.. Problem was, I was switching off my stepper supply at
> > limits end. Had to remember to reset switch each time power up.
> >
> > I got some really large diodes (100 amp) to use for a bridge. That'll
> > make is tougher. Just not had time to hook them up yet. Kinda been
> > busy with lifes other problems.
> >
> > David
> >
> >
> >
> >
> > --- In CAD_CAM_EDM_DRO@yahoogroups.com, "Roy J. Tellason"
> > <rtellason@b...> wrote:
> > > On Sunday 21 March 2004 09:48 pm, Roy J. Tellason wrote:
> > >
> > > > For a solution to that what you want is what's called a "soft

start"

> > > > circuit. This basically consists of some big resistors in series
> > with the
> > > > primary side of the transformer which are shorted out after the
> > system has
> > > > some voltage on it, typically with a relay. Check
> > > > http://sound.au.com/project39.htm (I think) for a page that

describes

> > > > building these for audio amps. He gives all of the formulas you
> > need to
> > > > figure this stuff...
> > >
> > > Whoops, that URL is incorrect -- the correct one is
> > > http://sound.westhost.com/project39.htm
> > >
> > > Sorry about any confusion...
> >
> >
> >
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