[sdiy] Small form-factor PSU challenge!

[Tom Bugs]

Heya Derek

EasyJet actually have different size restrictions for musical 
instruments (in theory, at least)
- 30 x 117 x 38cms (go to EJ web and seach for Musical - you'll find 
their blurb on it)
- hence the big-assed case I built last year 
(http://www.bugbrand.co.uk/images/ambassador_2/ambassador2__Jul07.jpg)
- oh, but note that 'cos the website states that doesn't mean the 
airport people will be happy to let you on! UK agents seem the worst / 
least accomodating.
- I did, though, travel fine with my latest case ( 52x44x20cm roughly) 
as carry-on (even got complements..)

A good PowerOne would probably be the HAA15-0.8-A --- 1amp at +/-12v or 
0.8amp at +/-15v
Ebay or www.componentsuperstore.com perhaps?

Best!
Tom


Derek Holzer wrote:
> OK folks, here's the challenge:
>
> I want to build two Eurorack-sized cases, 6U high, each with a PSU. 
> And I want to be able to close them together, face to face, so that 
> they fit the carry-on requirement of 20cm deep. Carry-on size 
> according to SleazyJet is 55X40X20, and I want to maximize it!
>
> That means the modules will be built quite flat, like the Cwejman 
> modules are. But it also means the PSU has to be quite thin as well. 
> I'm guessing I'll need 600 mA in one rack, and probably a lot less in 
> the other as it's only a matrix mixer. It may be even better to jumper 
> power over from the first case to the second, to keep the weight down. 
> In this case I might need more than 600 mA, I'm not sure since I 
> haven't measured the draw of the combined modules because they aren't 
> all built yet.
>
> I've thought about using Ken Stone's CGS66 power supply, but the size 
> of the heatsinks is an issue. I've also thought about just dropping a 
> PowerOne or similar ready-made PSU in there, as they seem quite thin, 
> and I have no huge love of building my own at any rate. Anybody have 
> thoughts on this? Does using the PowerOne type PSU eliminate the need 
> for additional regulators and the heatsinks they require?
>
> And furthermore, if I go the PowerOne route, does anyone know a good 
> supplier in Germany or EU I could get one from? Also, recommended 
> model numbers, as the PowerOne site has tons listed, and I know there 
> are plenty of clones out there as well.
>
> thx+best!
> Derek
>
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