[sdiy] Re: stupid PSU!!!

[mike ruberto]

Well let's see, I've got two 30 ohm 1% 100W units. If I put them in
parallel between the two rails I have almost 3 amps load.
I also have a 127 ohm 1% 120W. In parallel with the 30 ohm units I get
roughly 3 1/4 amps.

That should be sufficient load for me to get some accurate
measurements. I'm particularly interested in measuring the inrush
current spike. I have the 0.1 ohm I need to make that measurement so I
should be alright I think.

Mike

On Feb 19, 2008 6:29 PM, KA4HJH <ka4hjh at gte.net> wrote:
> >On Feb 19, 2008 3:06 PM, mike ruberto <somnium7 at gmail.com> wrote:
> >
> >> I am trying to find a way to load test this PSU at 4 amps now. Any advice?
> >
> >Build a constant-current sink with an op-amp, FET and a current shunt.
> >
> >(* jcl *)
>
> That or a 4 ohm, 60W resistor (OK so that's only 3.75A). A 100W would be
> better.
>
> I've got a resistor that size.
>
> --
>
> Terry Bowman, KA4HJH
> "The Mac Doctor"
>
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