Recommended power supply


#1

What power supply were you guys using at Connect? The plug size is uncommon, and I’m having some difficulty finding a compatible AC-DC supply for it.

Here is what I think is needed:

12V, >2A, center positive, with a less than 5mm O.D. and greater than 1.65mm I.D.


#2

Hi John, your spec (12V, 2A, center positive,…) is correct. We included an adapter in the boards we gave out at Linaro Connect to go from a 2mm female to 1.7mm male since the 2/2.1mm plug is more common. At Connect, we used a power supply with a choice of international mains plugs on one end and a choice of 2-pin interchangeable plugs on the other: http://cpc.farnell.com/ideal-power/25hk-ab-120a250-cp/psu-desktop-plug-in-30w-12v/dp/PW03336


#3

Thanks Steve! I came to the same conclusion. Adapter is best.


#4

I came from 410c’s Getting Started page. But,I don’t know correct O.D size for 410c.
my AC-DC supply (5.5mm O.D.) didn’t fit.
what O.D size is best?

By the way, I think “2.1mm to 1.7mm cable adapter”'s link in the page(https://www.96boards.org/products/accessories/power/) is incorrect. this link’s I.D is 0.7mm.


#5

@yoshi,

The power socket is 1.7mm, center pin positive. O.D. should be 4.75mm. The connector is specified as being CUI PJ-041H or equivalent. Datasheet for this is available here: http://www.cui.com/product/resource/pj-041h.pdf.

Thanks for pointing the error out. The correct link for the 2.1mm to 1.7mm cable adapter should be http://www.amazon.com/Super-Power-Supply®-5-5x2-1mm-4-8x1-7mm/dp/B00EA4Q60K/ref=sr_1_4?ie=UTF8&qid=1436114814&sr=8-4 - I have updated that on page.


#6

If it helps, I’m using this $7 power supply:

https://www.amazon.com/gp/product/B00VM292AO/ref=oh_aui_search_detailpage?ie=UTF8&psc=1

combined with one of these plug adapters ($13 for the whole set):

http://www.amazon.com/gp/product/B00CMMO6AE?psc=1&redirect=true&ref_=oh_aui_search_detailpage

While $20 might seem a bit much for a power supply, at least with this set of adapters I can re-use that power supply for almost any project, which makes it worthwhile, but if that’s too much, you might want to just want for one of the official power supplies.


#7

I got the one recommended by Arrow on the same page as where order DragonBoard 410C - it is “WM24P-12-A-QL” cost $12.70 plus shipping from them :
https://www.arrow.com/en/products/wm24p-12-a-ql/autec-power-systems#page-1