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Looking for polarity symbol

Using a universal adapter as a power source, need to use correct polarity configuration

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You will need a multimeter.

Posted on Jan 17, 2013

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Need to know input, polarity and voltage to ensure I have the right adapter.

Complete Guide to Using the Correct Charger or Power ...

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Jun 24, 2013 - If the device has a DC input of +12V / 5.4A, get an adapter that has a DC output of +12V / 5.4A. If you have a universal adapter, make sure it has the proper current rating ... Ideally, you'll have the same voltage, current and polarity on your ......or hdmi on my laptop .can you say what's the reason for the same.

How to select an AC to DC power adapter - ApogeeKits

www.apogeekits.com/power_adapter_selection.htm
An explanation of regulated versus un-regulated AC to DC voltage power adapters. ...voltage output power adapters and how to use this information to select the right one... Some (more expensive) DC voltage output power adapters have voltage ... Care should be take to ensure that the maximum input voltage of the load ...

AC/DC Power adapter ' Laptop Parts 101

www.laptopparts101.com > Laptop parts
Dec 26, 2008 - It's very important to use the right adapter for your laptop. ... Polarityon the new adapter's plug must be the same as on the original ... AC/DC power adapter voltage and amperage ..... I have purchased an non-hp dc-dc convertor (150W), 12Vinput, 19V output. .... So the cable component has to be replace.

Determining Proper A/C Polarity - Galen Carol Audio

www.gcaudio.com > Resources > How-To's

Jan 10, 2016 | Computers & Internet

2 Answers

I need to know the POLARITY of the AC adaptor to provide the correct setting using a universal adapter.
there is no polarity in ac current as ac means alternating current and that means alternating between positive to negative back to positive back to negative and so on
only dc ( direct current ) and the center pin of the plug is designated as the positive pole has polarity, the outer case being the negative
OR Are you asking the voltage of the ac adapter and the voltage of the dc output side of the adapter

Nov 26, 2015 | Office Equipment & Supplies

1 Answer

CaNT FIND POLARITY SYMBOL ON WIRELESS_N_TRAVEL ROUTER
Use a multimeter to measure the voltage on the adapter plug and you can determine the polarity at the same time.

Sep 09, 2012 | Computers & Internet

1 Answer

Speedstream 5100
There should be a Rating on the bottom of the big label on the bottom of the router. From what I could read from the manual, it says: Rating, 12VDC 700mA and then a symbol like a half circle with a line around a dot with a line - one is +, and the other is -.
Whichever the dot was is the one you normally refer to (the one in the center of the circle). You can search for that adapter, but it's easier just to buy a universal adapter. Make sure it can go to 12 volts, and has a mA rating equal or greater than the rating on the router. Also make sure when you use it, that you have the center of the plug for the router on the same polarity as the dot with the line on the router - most universal adapters will allow you to change this polarity.

Hope this helps, please rate :)

Mar 22, 2009 | Computers & Internet

1 Answer

Looking for power adapter for lingo noaa 740/ ne 370 weather radi
Here is a general case solution that might work even if you don't have the manufacturer's expensive adapter if you have some tech skills. Check the input plug on the radio. If you are lucky it should have a symbol next to it with a dot within a circle. The dot gives the polarity of the center connector and the circle gives the polarity of the outer connector of the plug. If you are super lucky, you will have the correct adapter already in your parts bin. Otherwise, you can buy universal 12V power adapters online from all electronics and radio shack. They include just about every kind of plug option and also some feature to select polarity.You can try the various plugs and find the one that fits perfect & then set the correct polarity. The current is not so important as long as you meet or exceed the required capacity which is often not given. Both universal adapters can provide 1000 mA which should be more than adequate. There is always a chance to screw up any electronic part; I can attest to that, but I keep 2 or 3 universal 12V power bricks on hand and have used them for many tech items.

Mar 13, 2009 | Lingo NOAA-740 AM/FM/Weather Radio

2 Answers

Ac adaptor
I actually was able to go to leadsinger's website: karaokesolution.com they had a replacement adapter for sale it was $9.95 plus a few bucks shipping which I thought was a GREAT DEAL! ***BUT****when it arrived, it was white, and DID NOT WORK WITH MY LS-3700. I eventually bought another system on ebay both LS-3700 mics worked with the black originally included adapter, and neither worked with the white one I purchased. The black one is an 8V and the white one a 9V so I think that is the problem. They both had the same polarity and mA limits. I tried a universal adapter but it had 7.5V or 10V to choose between and neither setting worked....I found an 8.5V adapter at a thrift store and gave it a try (((if you do this you MUST MAKE SURE THE POLARITY IS CORRECT OR YOU WILL FRY YOUR DEVICE AS SOON AS IT IS PLUGGED IN--it will smell like burning wires*)))

The Polarity is looks like this: [-] C-- [+] {a negative symbol circled a half circle around a dot opening faces the positive symbol circled and there is a line from the half circle to the positive symbol} Picture a dot in the middle of the C.


MAIN SOLLUTIONS:

1. GO ON EBAY FIND SEARCH "LEADSINGER MIC" and hope for a cheap replacement
OR
2. Find an AC adapter that is 8V-8.5V that fits and has a POSITIVE POLARITY -- Circle open to the positive symbol with a line to it.

Jan 02, 2009 | LeadSinger LS-3000 Consumer Microphone

2 Answers

Missing AC adapter
If you look at your DVD player, it will have information such as 5V, 2.2A. This information will help you choose the correct AC adaptor. Head over to The Source, FutureShop, BestBuy, etc and bring the DVD player in.

As for a universal AC adaptor. These range from $15 - $50. Just make sure the one you get has the correct plug and voltage/amp range and polarity for it. The salesperson should be able to help.

Here is a picture of such an adaptor. This is a picture of the back of an electronic device, showing 5V and the polarity. If your player has no information with the AC port, you will need to look for a label on the device with this information.

Dec 01, 2008 | Mintek MDP-5860 Portable DVD Player

2 Answers

AC/DC Adaptor
Greetings jack71471, there are a couple options to obtain a replacement AC adapter for your Durabrand DVD player. One option is to purchase a universal adapter from a store such as Radio Shack. The other option is to buy a dedicated 9 volt AC replacement adapter from a couple sources on eBay. Just do a search for "PDV-709 adapter" and you will find some AC adapters and 12 volt car adapters as well. If you choose the universal replacement option, make sure you bring the player and adapter with you so the salesperson can configure the settings and polarity to match the original adapter. That is unless you are confident enough to set it yourself, in which case you can purchase a universal adapter most anywhere as long as the current rating ( rated in milliamps or "ma") is equal to or greater than the original. Best of luck to you.

Oct 25, 2008 | Durabrand PDV-709

1 Answer

Modified power conector polarity.
I know what you're trying to do, and I don't recommend it. I've done some splicing, and had a few that burned up the machine, so I recommend buying a new power supply. Check Ebay, you can generally find one at a reasonable price. Here check this link to Ebay, they have your adapter for $16 and change. You can't beat that. So why take the chance of ruining the machine.

http://search.ebay.com/search/search.dll?from=R40&_trksid=m37&satitle=ECS+A535++ac+adapter&category0=

Aug 21, 2008 | EliteGroup ECS A535 Notebook

2 Answers

Need to know the polarity
you can set positive and negative of the universal power adapter 110v to 220v.

May 05, 2008 | Scanport 821S 17" LCD Display Monitor

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