12v 15A power brick for picopsu?

lesticx · Post by **lesticx** » Fri Mar 19, 2010 5:09 am

Hi,

I found this little thing on ebay:
http://cgi.ebay.co.uk/ws/eBayISAPI.dll? ... K:MEWAX:IT

data:
12V 15A DC 180W Universal Regulated Switching Power Supply

Universal AC input / full range
It's brand new, good quality & high performance
Input:AC110-240V 50/60Hz
Out put:DC 12V 15A
Approvals: 3C/FC/ CE
100% full load burn-in test
Protections: overload/ over voltage/ short circuit
Cooling by free air convection
1 years warranty
Weight:597g
Size: 199 x 98 x 42(mm)
7.8 x 3.9 x 1.7(inch)

Specs seem quite good, anybody have any experience on these bricks?
Setting it up obviously needs some soldering, but that's not a problem.

speedboxx · Post by **speedboxx** » Fri Mar 19, 2010 6:16 am

I bought a 15V version to charge lead acid batteries. Although it might be 12V output at a fairly high current, it doesnt say what the efficiency is. Im assuming that like with any switch mode psu, efficiency is going to be pretty low at small loads.

I dont see the point in getting a 120VAC > 12VDC switch mode psu > PicoPSU > Computer when you can just get a simple ATX PSU.

ryboto · Post by **ryboto** » Fri Mar 19, 2010 11:04 am

speedboxx wrote:I bought a 15V version to charge lead acid batteries. Although it might be 12V output at a fairly high current, it doesnt say what the efficiency is. Im assuming that like with any switch mode psu, efficiency is going to be pretty low at small loads.

I dont see the point in getting a 120VAC > 12VDC switch mode psu > PicoPSU > Computer when you can just get a simple ATX PSU.

space constraints in regards to cooling/heat control for 1. If you wanted a small ITX system with a minimal footprint, it makes sense, unless you want to attempt wiring an ATX psu externally.

lesticx · Post by **lesticx** » Mon Mar 22, 2010 1:09 am

There's a few reasons:
a) my case doesn't have space for an atx supply
b) I don't want it to build up heat, and it needs to be silent
c) I want the most efficient solution

That's why I'm wondering about his power brick. It's cheap, and the seller responded that its 3c/fc/fe approved, but I still doubt how efficient it would be.. especially because of the price.

Vicotnik · Post by **Vicotnik** » Mon Mar 22, 2010 2:39 am

It's not very cheap. The Dell DA-2 is 30$ and 18A.

ces · Post by **ces** » Mon Mar 22, 2010 3:08 am

Have you purchased the Pico-psu yet?

If not, get the winmate package sold by ElectroDacus on this forum.

lesticx · Post by **lesticx** » Tue Mar 23, 2010 6:21 am

Vicotnik wrote:It's not very cheap. The Dell DA-2 is 30$ and 18A.

Okay. After spending a couple hours around the forums, is there a guide on what I have to do to get the dell da-2 working with a picopsu? Or the Da-1 for that matter, would be enough.

Vicotnik · Post by **Vicotnik** » Tue Mar 23, 2010 7:17 am

eitheta explains the pinout of the DA-2 in this thread
- viewtopic.php?t=38787

I would not recommend that kind of connector though. Get a Mate-N-Lok connector or similar that can handle the load without problem.