[LINK] Australian energy efficiency standards for personalcomputers and monitors

[steve jenkin]

Glen Turner wrote on 18/10/07 4:39 PM:
> It's possible that USB could end up as that connector.  But USB is
> really only designed to power low current devices.  There is a
> Powered USB specification, but it's unlikely to be commercially
> acceptable due to its poor design.
>   
Power Over Ethernet: 48V, 400ma ~= 15W [less at the appliance. Allow
~20% for 100m of Cat-5]
<http://en.wikipedia.org/wiki/Power_over_Ethernet>

Any Votes for RJ-45 everywhere?

Strangely enough telephones work on 48V - but only 20-50ma. Couldn't
find the ITU-T Recommendation.

Microphones use a DIN standard for 'phantom power' - 48V & 2ma. [not
suitable]
> Best wishes, Glen
>
>   


-- 
Steve Jenkin, Info Tech, Systems and Design Specialist.
0412 786 915 (+61 412 786 915)
PO Box 48, Kippax ACT 2615, AUSTRALIA

sjenkin at canb.auug.org.au http://members.tip.net.au/~sjenkin