Re: [CAD_CAM_EDM_DRO] Re: Digest Number 1042

Roman,
Thanks but I still can't make it "turn on" It's like an ATX supply, I need to close some contacts somewhere but I don't know
where.
The supply is a LH Research "Super Mite"
Of course I will probably never use it, that's not the point. I must make it work, or "fry" trying!!

Roman Black wrote:

> > Hey Roman,
> > Since you have a background on switching supplies, I have a
> bunch that I got from some SUN servers but I can't make em' turn
> > on. If I give you the info on them do you think you could help? I
> haven't been able to find anything.
> > They are like 12V 20amp 5V 200 amp. Will I be able to use them
> like as a "bench" supply?
>
> Ha ha! You guys are great! What the heck are
> you going to do with 5v at 200 amps!!??!
>
> Seriously, the 12v at 20amp is more useful,
> but on computer switchers the 5v output is
> the main regulated one. You need to run the
> 5v output at about 5% of its rated current,
> maybe 10%. Then the supply should work just
> fine.
>
> This means you need a resistor or load that
> will always draw 5v @ 10A (and maybe 20A).
> This will dissipate 50W (or 100W) so your
> room will get hot. Oldtimers like me use a
> lightbulb, a 12v 100w highbeam unit from
> a car will be cheap and reliable (even at
> 5v it's dim but works, you may need 2 or to
> run both the high and low beams together),
> and it won't get as hot as a resistor as some
> energy is converted to light, not just heat.
> If you DO use a resistor, as always rate
> the thing at 4x (watts) more than you need,
> so you need a 200w to 400w resistor or
> it will cook. I say use the light bulb! :o)
> -Roman
>
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