Good advice Ken.
I'm looking to power a stack of up to 8 boards with Flotsam boards and
possibly up to 8 SATA 2.5" SSD drives as well. So, I am assuming I need
to be looking at about 16 devices * 2.5A each @ 5V on a good switching
power supply.
Thoughts of using this:
http://www.mouser.com/ProductDetail/Mean-Well/HSP-250-5/?qs=sGAEpiMZZMsPs3th5F8koANcuRqubmL6N%252bynPk%252b952k%3d
and breaking it out to the 16 device plugs?
David Byte
Sr. Technology Strategist
Alliances and Integrated Systems
SUSE
[email protected]
(P)918.528.4422
www.suse.com
https://www.suse.com/partners/integrated-systems/
On 3/26/2015 9:50 AM, Ken Tait wrote:
These boards have a pretty poor power supply to keep them 'cheap'.
That is why they require 5V in instead of 12V. All of the larger CPU's
have a large instantaneous current draw when they turn on. This gets
worse if you add disk drives or USB peripherals. The plug in the wall
power supplies are poorly designed, they in fact do NOT handle this
kind of surge well. If you get one to work, it is a random event. what
you really need is a 5V at 5A switching supply that has a fast rise
time to get this to reliably work.
If you place an on/off switch in the + power supply lead and plug the
'plug in the wall' supply in FIRST before turning it on, you may get
better results.
This allows the supply to come up to voltage before turning on the Max.
As for the barrel jacks, you can get them from Digi-Key or Mouser,
lots of the surplus houses like All-Electronics also have them from
time to time.
Hope this helps
Ken
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