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...