Got something else to discuss that is not covered by the previous forums? Post it here!
#68739 by gurdas
Wed Nov 10, 2010 7:21 am
I am shopping for a 220V, 50Hz to 12VDC, 1.2A adapter and some have fixed tip while others have multiple tip configurations. Most common tip sizes I am seeing are 5.5x2.1 and 5.5x2.5 (mm).

Examples of adapters, these take 220V, but have different max output current:
http://www.amamax.com/ltspullirepo.html
http://www.amamax.com/ltspullidc12.html
http://www.amazon.com/Power-Line-0900-7 ... B000QFLWAG (not sure if this takes 220V)


Q1. Can someone please confirm the power adapter tip size for Ooma Hub?

Q2. Of the three links above, will the first link suffice Hub's power needs? The adapter that accompanied Hub is rated for 12VDC, 1000mA output.

Q3. The second link adapter is rated for 2000mA (and 12VDC). Does that mean it could damage the Hub? Or is the extra current capacity harmless and will go unused?
Last edited by gurdas on Thu Nov 11, 2010 4:29 am, edited 2 times in total.
#68743 by murphy
Wed Nov 10, 2010 7:55 am
gurdas wrote:Q3. The second link adapter is rated for 2000mA (and 12VDC). Does that mean it could damage the Hub? Or is the extra current capacity harmless and will go unused?

It will not damage the hub.
The hub will only take what it needs.
#68806 by gurdas
Wed Nov 10, 2010 8:20 pm
Update, November 10, 2010

1. That third link's OEM, PowerLine, replied to my question confirming it does NOT work with 220V, 50 Hz.

2. Called Ooma support and they did not know the tip size, nor could they find out after keeping me on hold for over 15 minutes. I have been promised a response within 1 day. Let's see how long (if ever) Ooma would take to provide information on a spec which should be available to their technical people. Other than this episode, my more than 6 month experience of using Ooma and their tech support has been outstanding (just for the record).

3. I am embarrassed that the title to this thread says "Omma". Moderator, if you can, please correct my typo!
Last edited by gurdas on Thu Nov 11, 2010 4:30 am, edited 1 time in total.
#68813 by Davesworld
Thu Nov 11, 2010 1:22 am
murphy wrote:
gurdas wrote:Q3. The second link adapter is rated for 2000mA (and 12VDC). Does that mean it could damage the Hub? Or is the extra current capacity harmless and will go unused?

It will not damage the hub.
The hub will only take what it needs.


True, in the same veign that a 25 watt 110v light bulb will draw 0.22 amps even though it may be plugged into a 15 amp circuit and not burn out prematurely. If anything it is better to have a larger power supply than the hub needs, a power supply rated at a lower amperage than what the hub needs is more harmful, at least to the power supply.
#68814 by murphy
Thu Nov 11, 2010 3:18 am
gurdas wrote:3. I am embarrassed that the title to this thread says "Omma". Moderator, if you can, please correct my typo!

You can fix it yourself.
Edit the first post.
#68815 by gurdas
Thu Nov 11, 2010 4:27 am
Update, Nov. 11, 2010

Useful links on tip size:
http://support.radioshack.com/support_t ... rgde-6.htm
http://en.wikipedia.org/wiki/DC_connector

My at home measurement shows the Ooma Hub tip is probably a 5.5 x 2.1 mm. I intend to measure it with a vernier and/or take it to Radioshack for a match-up. Will edit this post to show result.

Visited RadioShack and the 5.5 x 2.1 mm tip fits the socket in Ooma Hub.

murphy, sfhub, Davesworld - thank you.
Last edited by gurdas on Fri Nov 12, 2010 10:17 am, edited 1 time in total.
#68824 by BigTV
Thu Nov 11, 2010 9:09 am
Hello

you should buy a 220 to 110 power converter if your planning to take the Hub overseas. the Telo has a switching power supply but the Hub does not.
The power supplies you referenced might work but we cannot guarantee and it might void your warranty by using a non Ooma power supply.

Thank you
#68839 by scooch
Thu Nov 11, 2010 11:58 am
I have been living in Germany for the past 7 months and purchased this for my Ooma and other 110v stuff

http://www.amazon.com/Power-Bright-VC10 ... 312&sr=1-2

It's obviously big if you are only doing brief traveling, but for extended stays it works very well. I have an outlet strip off of this and use it for my Wii, cordless phone, and Ooma which are all 110v 60hz only.

Bob
#68910 by gurdas
Fri Nov 12, 2010 10:27 am
BigTV,

Thanks for the note. It beats me why Ooma would not provide us a 100-240V, 50/60 Hz adapter. I am told a suitable unit has not been found but, really, you want us to buy that? Also, are you saying that if I use a 220V/110V power converter (with your power adapter) the warranty is still valid?

Also, I found Ooma tech support clearly lacking in their ability to answer power related questions. First they could not give me the tip size. Then they reply to my email not answering what I asked, but suggesting their own views. Now, they replied to my email and say the tip size is a 3.8 x 1.35 mm; which I am guessing is wrong since I've already tried the 5.5 x 2.1 mm and it fits snug.

To make things worse, the adapter that comes with the Hub is rated 12VDC, 1.0A, while the user manual and the Hub both specify 12VDC, 1.2A. For a product that works so well, I did not expect such glaring omissions.
Last edited by gurdas on Fri Nov 12, 2010 12:04 pm, edited 1 time in total.

Who is online

Users browsing this forum: Google [Bot] and 11 guests