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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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max carson

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You will need a multimeter.

Posted on Jan 17, 2013

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Jan 10, 2016 | Computers & Internet

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

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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 :)

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Looking for power adapter for lingo noaa 740/ ne 370 weather radi

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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.

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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.

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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.

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Need to know the polarity

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

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