[Server-devel] 12 Volt power system for School Servers.

[Jerry Vonau]

On Wed, 2013-05-29 at 15:42 -0500, David Farning wrote:
> The piece I am looking at is reducing the losses between the battery
> and the server/AP.
> 

See my earlier response.

> 
> Several systems have a 12V Battery which is inverted to 120AC which is
> then transformed back to low voltage DC for input to the server/AP.
> That doesn't seem very efficient.
> 

+1

Jerry

> 
> Dave
> 
> 
> On Wed, May 29, 2013 at 3:29 PM, Sameer Verma <sverma at sfsu.edu> wrote:
>         On Wed, May 29, 2013 at 1:03 PM, David Farning
>         <dfarning at activitycentral.com> wrote:
>         > Tony could you share more information about your work on 12
>         Volt power
>         > supplies for School Servers?
>         >
>         > Whenever I see a School Server setup containing a 12V
>         Battery, an inverter,
>         > a power strip, and a couple of 120V to 12V power supplies to
>         provide power
>         > for the server and the AP... my eyes start to tear up:(
>         >
>         > The situation I am looking at has power part of the day so
>         we can recharge
>         > the battery. To keep things simple we would like to use a
>         Trimslice or XO-4
>         > and off the shelf AP.
>         >
>         > Ideally we would like to have 'kit' that contained
>         everything except that
>         > battery that can be set up and tested before arriving at the
>         deployment.
>         >
>         > Thanks
>         >
>         > --
>         > David Farning
>         > Activity Central: http://www.activitycentral.com
>         >
>         
>         > _______________________________________________
>         > Server-devel mailing list
>         > Server-devel at lists.laptop.org
>         > http://lists.laptop.org/listinfo/server-devel
>         >
>         
>         What about an off-the-shelf SoHo UPS unit?
>         
>         cheers,
>         Sameer
> 
> 
> 
> 
> -- 
> David Farning
> Activity Central: http://www.activitycentral.com
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