Date   : Tue, 30 Aug 2011 09:01:47 +0100
From   : pete@... (Pete Turnbull)
Subject: eBay... sigh

On 30/08/2011 03:37, Alan Williams wrote:
> I would check out meanwell, they have a huge range.
> 
> http://www.meanwell.com/search/net-35/default.htm
> 
> Something along these lines would be fine.

Except it won't fit, because it's too wide (99mm x 97mm x 36mm).  A Beeb 
PSU just fits the space and is 170mm x 84mm x 55mm.  It's also a bit 
light on the +5V capacity, at 3A rather than the BBC's 3.75A.

There are industry-standard sizes for small SMPSUs...  The NET35 is a 
standard size too, just the wrong one.

On 30/08/2011 02:28, Mark Haysman wrote:
 > A good replacement would be an Astec LPT64:
 >
 > 5v - 8A
 > 12v - 2.5A
 > -5v - 1A

That will certainly fit, as Mark said.  It's part of a range of 
industry-standard sized PSUs, at 127mm x 76.2mm x 42mm (6" x 3" 
footprint), and has plenty of capacity as Mark pointed out (though the 
Astec data sheet says 5V at 7A, not 8A -- but still "amply sufficient"). 
There are many more of the same size and varying voltages/capacities by 
other manufacturers, but Astec is a good bet.

Expect to pay ?20 - ?50 for a similar PSU.  For example, an Astec LPT22 
for ?20 is about the same rating as the one Alan suggests (5V at 3A 
12V at 1.5A but it has -12V instead of -5V); an LPT64 is about ?40.

-- 
Pete                                           Peter Turnbull
                                               Network Manager
                                               University of York