[OZAPRS] smart meters ?

[Damien Gardner Jnr]

Out of interest, what PSU are you using to allow it to run off 13.8V?  
Quite a few of the boxes in the rack in the garage are EPIA uATX boards, 
would LOVE to be able to do away with the big 3KVA UPS before it's time 
to replace the SLA's in it in another 6 months time.. :)

Actually at the moment I'm trying to figure out the best way to get 12V 
for my external eSata caddies from my 13.8V supply, after one of the 
power supplies died leaving me 1.5TB down on the fileserver..  Astone 
were completely useless when I emailed them asking for the power supply 
specs of their enclosures.. got a reply saying 'the external power 
supply supplies 12V at 2A, so you should replace with a similar supply'..  
I replied reiterating my request for the enclosures' input suppply range 
tolerances, but I don't think they *know* :(

--DG

On 12/12/2010 9:32 PM, Richard Hoskin wrote:
> I'm running the local Igate, (UI-View&  AGWPE) SAMail email system etc on a
> VIA EPIA-M Mini-ATX PC. It's running on 12v using a SLA battery and PSU at
> about 40W to 50W of power drain.
>
> After booting which takes a little longer than the average system it runs at
> about 20% CPU just fine. The CPU is fan less and runs reasonably cool. The
> PC seems to be very reliable.
>
> Cheers
> Richard
> VK3JFK
>
>
>> -----Original Message-----
>> From: ozaprs-bounces at aprs.net.au [mailto:ozaprs-bounces at aprs.net.au] On
>> Behalf Of Jamie Campbell - VK2YCJ
>> Sent: Sunday, 12 December 2010 12:15 PM
>> To: Australian APRS Users
>> Subject: Re: [OZAPRS] smart meters ?
>>
>> Shaun,
>>
>> Consider these options:
>>
>>
>> 1. Asus EEEPC-701
>>
>>
>> 2. Asus EEEBox B202
>> http://event.asus.com/eeepc/microsites/eeebox/en/specifications.html
>>
>> 3. Mini-ITX motherboard
>> http://www.gigabyte.com.au/products/product-page.aspx?pid=3549#ov
>>
>>
>> We have used both EEEPC-701 and the EEEBOX B202 at work for small 24hr a
>> day appliances and the power consumption is exceptionally low.
>>
>>
>>
>>
>> Jamie Campbell
>>
>> vk2ycj at bravo.net.au
>>
>> I didn't have time to write a short letter, so I
>> wrote a long one instead.  (Mark Twain, 1835-1910)
>>
>>
>>
>>
>> On 12/12/2010 9:09 AM, Shaun wrote:
>>> Hi Andrew,
>>>
>>> We started on power consumption for the computers used to run APRS,
>> especially
>>> iGates, and the associated costs.
>>>
>>> To the group:
>>>
>>> I am going to put a meter on my PC to see how much power the thing
>> actually
>>> uses.  Even though it has a 300 watt PS. I don't think it is actually
>> using
>>> that much.  Comparing it to my home brew box, which has a 60 watt globe
>> to
>>> heat the beer, I had assumed about 100 watts for the PC given how hot it
>>> gets.
>>>
>>> So 0.100kw x 24h x 365d x $0.22 = $193.
>>>
>>> Some notebooks are running sub 10 watts, so $19.70 per year in running
>> costs.
>>> So in short, using a netbook, external monitor and keyboard, which I
>> already
>>> have, payback is less than 2 years or a bit over 2 years if you get the
>>> bottom  end Dell 10.1 inch at $399.
>>>
>>> Shaun
>>>
>>>
>>> On Sat, 11 Dec 2010 23:39:57 Andrew Rich wrote:
>>>> Aprs ?
>>>>
>>>> Sent from my iPhone
>>>> Andrew Rich
>>>>
>>> _______________________________________________
>>> OZAPRS mailing list
>>> OZAPRS at aprs.net.au
>>> http://lists.aprs.net.au/mailman/listinfo/ozaprs
>>>
>>>
>> _______________________________________________
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-- 

Damien Gardner Jnr
VK2TDG. Dip EE. GradIEAust
rendrag at rendrag.net -  http://www.rendrag.net/
--
We rode on the winds of the rising storm,
  We ran to the sounds of thunder.
We danced among the lightning bolts,
  and tore the world asunder