[simpits-tech] PSU loading

[Dave]

Guys
According to my reading Roy is correct. A load is required on both +5v and
+12v outputs. Modern M/boards like the ATX usually draw enough power
themselves but the 12v needs a hard disk or such like connected. Apparenly
2.0-4.0 amps are needed on the +5v and 0.5-1.0 amps on the +12v. Some more
expensive PSU's do have built in resistors so Gene is right as
well...nothing new there then, eh :o) You can connect a 5 Ohm, 50 watt
sandbar resistor between pins 1 and 2 on a disk drive power connector...
mind it will get  HOT!
----- Original Message -----
From: "Roy Coates" <roy@flightlab.liv.ac.uk>
To: <simpits-tech@simpits.org>
Sent: Friday, December 27, 2002 4:42 PM
Subject: RE: [simpits-tech] Resistor for LEDs?


> On Wed, 25 Dec 2002, Gene Buckle wrote:
>
> > Actually, you only have to trick the power good return line into
thinking
> > it's hooked to a PC.
> >
>
> I do recall the "power good" line on AT supplies but I'm sure to keep a
> switched mode PSU happy it NEEDS a load.
>
> Roy.
>
>
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