With new phone USB chargers 5v is standard across the board so the higher the amps you buy the better. Ideally, youll have the same voltage, current, and polarity on your adapter and device. That adapter would have been fine. Im surprised that it ruined it. Hence, the oft-encountered Charging is not supported with this accessory message. Can you help me? Lol. Great article. Since the radio requires 400mA (0.4A) it should be perfectly safe to use for the radio as the adapter says so itself at the stated 400mA on the label. I tape mine on just in case. For example if you bought a power supply from Europe that says INPUT: 240V ~1.5A 50hz then it will not work in america or japan or several other countries. Output: 12V (DC symbol) Max 1.8VA. Your article gives me hope that, if I spend a few bucks at Radio Shack, I can revive my device by buying the right adapter. Very helpful. Can I use The 19 V charger on the 15 V power system? You dont mention trickle charging. This then drew my attention to the power supply Voila the possible solution may have been found! The compressor takes 4 AA batteries and runs on a 6V A.C. adapter with a polarity of inner ring(+), outer ring(-). Output is only DC. The universal power supply has circuitry to adjust the voltage to the needed level and the maximum current would also change such that the product is 90W. I lost my PS2 Super-Slim power cable, and I want to play the PS2, but I have one for my PS3. I am trying to replace the light string that we had plugged in and I found a 12v led light string I thought would work. In that case it is best to check with the manufacturer or online for the same device prior to organizing a new power supply. Thanks! If its the + then its positive polarity and negative if its the -. If you have a device that needs 20 volts, and you feed it 100, your device will probably not survive the experience, though may entertain you with some fireworks for a few seconds. can anyone tell me what VAC stands for? I have a 9volt that reads 9 volts then a solid bar over top a - this type of symbol followed by 3VA DC. However the C is backwards facing the +. All I can do is use something that fits, and if the adapter dies or the appliance dies, then it all just goes in the rubbish bin. Im still if sure if the polarity drawing on the adapter is what the adapter does or what the device its plugged into should do. Will I have problems? Imagine you want to tow a speedboat. I have a spare wall wart rated at 9V DC 1500mA that I would like to use which also doesnt indicate polarity. Does the Apple iPhone 14 come with a charger in the box? my old AC Adapter specs: Please reach out at your convenience: jayaallen * gmail.com. It doesnt have the little circles diagram, but it does have a drawing of the tip (male) with a + near the end of the tip (the smaller part of the male) and a - near the top with the wire. It is model F4U041 and the coding is something like this: Often a good bright light and finding the right angle to read the lettering and symbols. Im willing to bet that any given household has a dozen or more different types of cell phone chargers, AC/DC adapters, power bricks, power cables, and charger plugs. Chances are the adaptor will suffer/burn out, especially if you device requires the full 29 volts and there is a large difference between 19volts to 29volts. This simple lifehack helps me maximize credit cards rewards programs for every purchase I make. Having so many chargers can be pretty frustrating. Cheers from Australia, Short and brief but very useful, I always had problem in understanding these concepts. Can I just buy a 6v wall transformer and cut off the plug and just use the bare wires for a connection? The PS2 power supply turns the AC voltage in your wall from the power company into DC. Dennis. Thanks! Product Information Overview The Apple 20W USBC Power Adapter offers fast, efficient charging at home, in the office, or on the go. Need to ask one question. You also dont have to worry about polarity with USB. And thats why I have a label maker. Re: If no Input voltage, current, or polarity noted. Also, My brother in law told me he may have a 12v 3a. This was the best simple summary of the article I could have imagined. Ive since ordered a correct voltage ac cord with 12V4A, so I hope it actually works. The instructions were very brief and did not mention (nor provide) what power supply adaptor was needed! Personally, out of tons of these adapters I own with the figure eight 2 female connector plug cords, they are all higher in amps. Current must be same or higher. On a side note most USB charges are 1Amp so if it idoes not say that is probably the case. If its stated 5V, you are not in trouble , because you can use the USB cable to charge your phone by the powerbanks port. Wait! CONNECT THE MOST ADVANCED PCIE 5.0 GRAPHICS CARDS. What about AC output adapters? Yes, thank you. Hook them up in parallel and R will be 2 ohms. He sold me a new 2.4amp charger at cost and Ive been happy ever since (more than 2 years)! If your appliance says input: DC 12v/1A, get an adapter that says Output: 12v/1A DC. Should I keep trying? Those two concepts combine to answer your question; let me explain with an example. It does not say the polarity and I can not find it online anywhere. If you multiply the voltage by the current, you get the wattage. please do keep the good work rolling. but now after reading your post last night, i think i already have the idea of what kind of adapter i should look at. -DC Output: 19.5V 11.8A 230W The 2.4amp one would run cooler being under less strain. They convert alternating current (AC) into the required direct current (DC). I have a Ashton Keyboard which a neighbour had given me, mainly because it wasnt working. iPhone Which Cable and Power Adapter Does My iPhone Need? An AC adapter is an external power supply that converts alternating current (AC) from a wall outlet to a direct current (DC) needed by an electronic device. Power adapters for iPhone - Apple Support Battery specs: 6V 4.5A. Most Windows laptops come with 65W adapters, and most MacBook adapters are less than 100W depending on the model (see . Output: 12VDC 500 mA. Well said. Perhaps they needed to get rid of excess! Power adapters are a bit like canned food. Output :19 V DC, 3.42 A, 65 W OUTPUT: 20V. Power adaptor for Apple Airport Extreme. Probably not much. 60/50Hz Very Frustrating!! In theory, your device should be fine and not have overheated as it was under powered. No wonder when it Chinese but they could still make an effort as for safety purpose and so we dont buy too big amps that are more expensive, for nothing. If I have an input of 12V DC 3.0A and I used a lower amp on accident will it damage the device? I cant seem to find a power supply that goes from 12v outlet to 12v light string. Benefits of Using a 100W USB-C Power Adapter with a Mobile Dock You would want to check how many amps the device requires. Can I use an adaptor with 9v DC and 1.0 A output? If you have a universal adapter, ensure it has the proper current rating and choose the correct voltage and polarity. I have a Woodstation. I completely understand the output amps. Hi Jack. No, it dont cause any harm to your battery. Just curious, is it safe if I use a 20V 2.25A charger on a 19.5V 3.33A / 15V 3A laptop? Determining the outputs and inputs of your adapters and devices is the hard part. Thank you so much!! Same can be true for the reverse of course it all depends on which way the C is facing. The other day I accidentally threw away my husbands beard trimmer charger. to label my cords. Power Charger/Power Adapter Same thing. Now, you can calculate your phone chargers power and compare it with your powerbanks power. I was going to splice the two tother but the old charger had an out put of 12v 1.5a and the new one is 12v and 3a. TIA still getting my head around this stuff and hope you can make sense. I have a photo but dont know how to attach it. Besides, you will find some more powerful USB adapters that come with high current and electrical power delivery, for . Hey, I plugged a AC 5.5v 2.5A power adapter into a DC 5V charged device, and now its not working, did I do something bad to it? i couldnt agree more isnt there a simple chart i can input the info of the ac or dc adapter and it will give me the crossreference electrical info on the side EXAMPLE my adapter reads input output exc. What are the types of switching power supply design? And once that happens, it can be complicated to figure out which goes with which. I went to Radio Shack and bought an adapter that can be used with multiple tips, along with the correct tip for my device, and all is well again. Do they have a certain polarity? If your Mac uses USB-C to charge, you can charge your Mac laptop with any USB-C power adapter or display. thanks for this informative guide . Can I assume that any AD-5 adapter will have the correct voltage, amperage and polarity for that keyboard? I ended up getting an used replacement from an independent computer repair shop for $20. The amperage (current) of the plug can be higher than that of the device but not lower. On the back of the phone, it says 10V DC, 500 mA, and positive polarity. Now I have a new radio equipment with its own amplifier, so the now old one, I wanna use with 2 passive speakers connected to the home projector. Thanks for confirming this! When the power adapter suppliespower to the device, it can also be described as a charger adapter, wall wart, or power brick. I bought my first one from an AT&T authorized dealer. Kind of feel that I am, hence the question. Home Reviews Electronics The Best Power Adapters for Quick and Convenient Charging TechJunkie Expert Recommendations The Best Power Adapters for Quick and Convenient Charging NEWVANGA Universal Power Adapter Read More AILKIN Wall Power Adapter Read More LUOATIP Dual Port Power Adapters Read More Ceptics European Travel Power Adapter Read More The new adapter works the 20 Watt bulb in the tree but does not turn the color wheel. P = 50 watts There are manufacturers, mostly from China, which displays the symbol in reverse where the C or open circle is placed on the right. The charger is designed for this and can be use is globally. Also, under the current too high section above, it explains that its OK if your power supply is rated for MORE current (amps) than the device needs; the device will only draw the current it actually needs. i have bought a new laptop adapter which is of the same voltage , current and polarity.