Need replacement AC adapter that works with 220V

Posts: 16 · Vonage Forum Associate Joined: May 22, 2005 Posts: 16

homeintern - Exactly. That's the point entirely. As I said:
"The key is just that the supply can maintain 12volts, 1a, without a drop in output."
Certainly plugging the Vonage box into any old 220 power supply isn't the solution. Sorry if I wasn't clear on that.

In short, what it appears you found (and rightly so) was something to power the RT31P2 at 12volts, 1amp.
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Grog -- I also agree that a lighter solution is better for travellers than the heavier transformers. Hence the reason I gave my endorsement to the item at the RP Electronics link. My point was really just to say that I'm happy with my setup as someone who has been overseas for a long time. It's a nice, reliable, option to power multiple devices (I have a tv, vcr, router, as well as the RT31P2 plugged into it) and I haven't seen any evidence that the transformer is a power hog, though that's an interesting point.

Posts: 2 · New Forum Member Joined: Jan 04, 2006 Posts: 2

Grog wrote:

I solved the 220V problem (for about $50) but went a different route that also gives me flexibility for the future.

Linksys 12 Volt Power Over Ethernet Adapter Kit

The Linksys 12 Volt Power Over Ethernet Adapter Kit is 110V/220V and removes the need for a power outlet at the unit. Instead, you use a power outlet near the DSL modem and the power is injected into the Cat 5 cable, then split back out and plugged in at the unit. Works like a charm and I don't need the supplied 110V adapter anymore.

Grog's thinking shows that great minds think alike - and the solutions to persistent problems like the Linksys 220V Question are solved in some form of parallel evolution.

Ummmmm: I have a concern about using the Linksys POE Power-Supply. I remember reading an article on hacking the WET54G's predecessor, the WET11G to give it POE capability.

(Remember that the WET11G was just a PCMCIA card welded to a back-plane in a blue case).

In that article, it pointed out that the the WET11G was equipped with a voltage regulator which could handle much higher voltages than 12 V.

Why? This is because the WET11G was designed to operate on either very short or very long POE setups: and the power supply was designed to deliver 12V over long runs.

Accordingly, the voltage would have to be much higher over short runs - where there is no voltage drop.

If you look at the label on the Linksys POE Power supply, you will see that it specifies a much higher nominal voltage - something like 54 volts.

My question is: will a Linksys Router be able to handle the higher voltage supplied by the POE adapter in close quarters?

And to finish: I find Linksys/Cisco's smug arrogant silence on the matter of "why they do not supply a "switchable power supply" very very disturbing.

Equally disturbing is the fact that the labelling on the out side of Linksys retail boxes is silent on the voltages handled by the device and the enclosed power-supply. The box labelling goes on and on wtih great elaboration on irrelevant minutia: but it never gets down to business as to the voltages.

This sort of conduct is beneath Linksys's dignity: and it is incomprehensible and unfathomable why Linksys just doesn't routinely offer the 220V power supply for sale on its website.

I first encountered this problem in 2002 when installing a SX71 in my Sydney office. One whole day on the phone to Linksys Australia and then to Linksys Singapore yielded nothing but yawns and doubletalk.

I don't know - but it makes you think.

Posts: 16 · Vonage Forum Associate Joined: May 22, 2005 Posts: 16

The funny thing as I may have written elsewhere in the forums here is that almost any piece of electronic equipment that is even remotely "portable" has a 110-220v power supply. It's not rocket-science to make a power supply that doesn't have to be run through a transformer. Nonetheless, there are solutions out there, which is good. The long and the short of it for me is that one really shouldn't be forced into trying to locate one -- it should come in the box as purchased, requiring only an adapter. Just my $.02.

Posts: 39 · Posted: Thu Jan 05, 2006 12:27 am Post subject:

I do not understand why every one is complicating this problem Question

. My family and I just recently moved over seas on an 18-moth assignment and we took most of our electronic equipment with us. This included all the kids video-games systems such as Playstation 2 and GAME CUBE, wireless router, Vonage phone adaptor, 2 lines cordless phones, coffee maker etc..

Originally, we fooled around with all the 220V to 110V converter mess and for some of the large equipment you do need the large heavy 220/110V covertures such as the coffee maker. However, the electronic equipment was a mess and some of the small 220/110V converters we brought with us from the States exploded on their own without even plugging any thing into them.

One day my daughter plugged the GAME CUBE directly into the wall with just a plug adapter, and Walla she blow up Pissed Off

the 12V adapter. We went to a local game store and asked about power supply for the GAME CUBE, Idea

he handed us a new 12V power supply that is 220V and specially designed for the GAME CUBE.

I know, I took too much of your time by now Boo hoo!

; However, after this instant, I purchased new AC/DC converters specially designed for each equipment from their local dealers (linksys, Panasonic, etc.) and they all work perfectly. This way I now have my 120V power supply stored one place to use when we go back to the States and all new 220V power supply for over seas assignments.

Posts: 16 · Vonage Forum Associate Joined: May 22, 2005 Posts: 16

From my past experience, having lived overseas for 11 years, I discovered that finding adapters for various US voltage appliances, etc. could be far from a simple trip to a local game store. No 'voila" to be had there Lol

About the best solution I ever came up with (having had several bad experiences with universal "select-a-voltage" adapters that could not consistently deliver 12v/1a (even when the wattage specs should have been more than adequate) was to go with a great quality transformer that plugged into 220v and then had an American plug opening for an input! They were only about $10 each for ratings upward of 50/75 watts.

Congratulations on finding what you need in Qatar --- may your remaining 17+ months be as blessed. Eek