[Asterisk-Users] OT: carrying a router, firewall, switch, ser ver, some phones with me on flight to Europe

[Huddleston, Robert]

Well here's a suggestion - a little crazy - but works... Most equipment is
taking the 120vac and converting it into DC voltage. So why not just feed it
DC voltage directly???
We had a situation where our field techs needed to test dsl circuits and
voip ata from the demarcation point outside a house or business. A UPS might
have worked - but the down conversion of 12v dc battery in ups up to 120vac
to power the plugs on the ata and modem - just to convert back down to 12
and 5.. Make sense... Common electronics theory tells you that there is
waste in step-up/step-down === heat...
So maybe that's an idea... I took a UPS battery and a small project case
from common electronics retail store... Then bought me a very small voltage
regulator and soldered it in the case.... I was able to split off 12v and 5v
from the ups battery and run for days...
Sounds like weird science - but it works!!

-----Original Message-----
From: asterisk-users-bounces at lists.digium.com
[mailto:asterisk-users-bounces at lists.digium.com] On Behalf Of Shaoul
Jacobson - TELLINK
Sent: Thursday, May 19, 2005 8:26 AM
To: Wilson Pickett; Asterisk Users Mailing List - Non-Commercial Discussion
Subject: RE: [Asterisk-Users] OT: carrying a router, firewall, switch,
server, some phones with me on flight to Europe

Hi,

> There is of course one obvious issue, that of powering your equipment
> at 220V/50~ and the plug convertors if your are lucky enough to have
> power supplies that do 100-250v.

and the plug format is different 
(UK, germany+NL, France+Belgium, Italy, ...)
there are some 'universal' plug changers

good trip

Shaoul Jacobson
Senior VoIP Consultant
Tellink
Tel :	+32 3 201 96 36
Fax : 	+32 3 227 09 81
e-mail	shaoul at tellink.com


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