[sdiy] Small form-factor PSU challenge!

[Derek Holzer]

Yup, aware of the "music instrument" clause, but I'm not willing to 
either push my luck and get the thing thrown in the hold, nor lug around 
that hernia-inducing monster case you showed me a few years back!!!! ;-) 
Thx for the PowerOne tip, I'll check the dimesions and see if it works 
for what I need.

best!
D.

Tom Bugs wrote:
> 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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>>
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> 
> 

-- 
derek holzer ::: http://www.umatic.nl ::: http://blog.myspace.com/macumbista
---Oblique Strategy # 15:
"Ask your body"