What about this for a TINY 400w 12v psu?

[Todayican2]

I'm a bit of a newb when it comes to the electric stuff, but what about:

2 of these: http://www.mouser.com/ProductDetail...nsY2LFIhsWxSy8AGp0JMhT1DYBq/Utn9l64T23%2b5g==

And one of these: https://www.amazon.com/dp/B019SY0TAO/?tag=theminutiae-20

To wind up with an internal or external pico 12v power supply measuring roughly 4x4x1.6?

 

[Kmpkt]

You'd need a special device to sum the power from both of the units, but otherwise your idea is sound. Just so you know, there is also a Meanwell EPP 400 that is 5" x 3". Overall that would be a savings in size as what you are proposing has a footprint of 4" x 2" x 2 which will either be 4" x 4" or 8" x 2".

 

[Julio Espinosa]

That's somehow most 500w pico PSUs are powered.
I don't know if they give them to you, but I can see that you have to add the cables (and connectors) to plug the AC Cable (from the wall) and to the pico PSU.
If that is not a problem to you, then yeah, you can use it (as far as I understand).
Also, you have to use a 12v Pico PSU.... there are not a lot, since most of them are powered by laptop bricks (with 19v).
Adding a fan, in my opinion, is a waste in this small PSUs.

 

[Todayican2]

Kmpkt, if I did my math right the 400 single unit has 15 sq" of footprint and it a few mm taller than these things. (8 sq") I was also digging the 200s because they apparently pull 200w with no specification for a fan (But I'd use one anyway)

 

[Kmpkt]

Almost positive they need forced air, at 10 CFM I believe. 140W otherwise.

 

[Todayican2]

You may be right, I just glanced that psu for the first time earlier today

 

[Julio Espinosa]

Almost positive they need forced air, at 10 CFM I believe. 140W otherwise.

You are right!
Didn't see that part of the specs

 

[ColorZepppelin]

@Todayican2 have a look herehttps://smallformfactor.net/forum/threads/open-frame-single-voltage-psus-eg-250w-12v-0-17l.1877/

Artesyn CPS250-M Series 250W 12-24-48V 33x51x102=170ml

Bel Power Solutions 784-ABC275 275W 19x76x127=180ml

CUI VMS-300A-12 300W 12V 29x76x127=280ml
(bonus with CUI is they provide great 3D models, in any file format you could want, even Sketchup, directly on their website)

Mean Well EPP-300-12 300W 12V 94%eff 35x76x127=340ml (55eur)
Mean Well EPP-400-12 400W 12V 94%eff 35x76x127=340ml (65eur)