[rescue] Netra 1100/1400 => 1105/1405?

[James Lockwood]

On 22 Aug 2001, Gregory Leblanc wrote:

> How much are the machines though?  The power supply it what's expecting
> -48V (probably NOT +48V, unless it's some weird stuff), so replacing it
> with a normal power supply shouldn't be that hard.  Replacing the power
> supply shouldn't be hard, assuming we can find a pinout for the
> connector on the motherboard.

If it's the same as the U60 power connector, you won't be able to use an
off the shelf PC power supply.  The U1/2/30/60 (and some others)
powersupply generates core CPU voltages directly through a set of control
lines.

Easiest thing to do by far is to get a p/s that can pump out -48VDC at a
few amps and use the existing p/s to regulate.  A simple linear setup with
some big filtering caps would be cheap and bulletproof (though heavy) if
you can't find an off the shelf unit from an electronics scrapper.

-James [by the way, how much are these Suns going for?]

--
James Lockwood
Guy on Summer Vacation (dot-com bombed)
http://www.foonly.com/resume/