Huddleston, Robert
2005-May-19 06:09 UTC
[Asterisk-Users] 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 _______________________________________________ Asterisk-Users mailing list Asterisk-Users@lists.digium.com http://lists.digium.com/mailman/listinfo/asterisk-users To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
David Brodbeck
2005-May-19 06:53 UTC
[Asterisk-Users] OT: carrying a router, firewall, switch, ser ver, some phones with me on flight to Europe
> -----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 wellYes. 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.
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