Re: VIA Network MP3 Project

["paul_watkin" <paul_watkin@xxxxxxx>]

I might not have explained myself clearly, use the external PSU from 
a Laptop (the omnibook I am using has a 19V 3.16A PSU) AND build a 
small board to go into the case of the end product.

You then need to derive the various ATX PSU voltages (+12V, +5V, 
+3.3V, 0, -5V, -12V I think, not 100% though?) using regulators which 
shouldn't be too difficult or expensive and then attach the Molex 
connector.

As there would be no drives in the system (highest current draw item, 
especially on startup) this should be more than capable.

Not aware of anything special about an ATX PSU, but not 100% sure.

The big advantage of this is you don't need to play with 240V mains 
inside whatever you are building. The HP ePC uses an external power 
supply in a similar way.

Cheers

Paul
--- In ukha_d@y..., "Phil Harris" <phil@a...> wrote:
> 
> > Yup that solution would work - only problem is I don't have 
> > any laptop psu's nor the knowledge to put a regulator on it -
> > i'd end up blowing it up. Anybody care do take this on?
> 
> No it wouldn't ... Laptops don't have a PCB inside to take the 
output
> from an external PSU and convert it into an "ATX mainboard
friendly"
> format.
> 
> Phil

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