asterisk users - May 2005 - OT: carrying a router, firewall, switch, ser ver, some phones with me on flight to Europe

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@lists.digium.com
[mailto:asterisk-users-bounces@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@tellink.com


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> -----Original Message-----
> From: Giles Coochey [mailto:giles.coochey@mirada-solutions.com]
> * While most PC PSUs these days are 100-240V, and they seem to have no
> problems operating both in Europe and the US. UPSs are different,
> however, they are almost universally either 110V or 240V only, and
> there's not even a switch to switch between the two voltages. APC will
> sell you either a US or a EU version, and usually only if they're
> shipping to the destination.
> 
> * Just a small UPS will probably do your baggage allowance in as well
Yes.  The company I work for occasionally ships configured PCs (being used
as industrial controllers) to European countries.  The PCs themselves are no
problem, but if a UPS is required we always have them buy it locally.
They're hard to get for European power standards in the U.S. (I've
tried),
and they're heavy and expensive to ship.

Don't put anything in your checked bags you can't afford to lose.  One
of my
friends is a travelling technician and regularly checks a bag of tools.  It
almost always arrives with something missing.  He's lost three Leatherman
tools.  The TSA won't allow you to lock bags anymore, and the TSA inspectors
and/or baggage handlers apparently have sticky fingers.  If it's expensive
to replace and too big to put in a carry on, consider shipping it to your
destination instead of putting it in your luggage.