But also many adapters say a maximum AMPS input. Will it work? I know its a little different but I will say that I used the wrong cord for my flashlight. Yes, thank you. It is important because most laptops can only run on DC power. I have a Woodstation. Can I use an adaptor with 9v DC and 1.0 A output? I want to use a transformer to connect my 24 volt drill to 240 volt mains. Thank you so much for this article Mr. Busch. I found one on ebay and the seller sent me picture of the adapter. I realized I actually do have a ups for my computer. What is an AC Adapter? - Computer Hope Also, charging voltages are greater than rating voltage. I believe Sean did respond to her question. 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. Cheers. Sean, I like your explanation. I have a Ashton Keyboard which a neighbour had given me, mainly because it wasnt working. The 4.2V is just the voltage that your battery will power your phone. Helpful to knowif you label them when you get them.. A concern I have is with finding REVIEWS for Chargers // Power Adapters// Universal Laptop Power Adapter// AC/DC adapters, in the hope that the buyer knows which is the best quality product: its not necessarily the most expensive, and the cheapest might also be good. Its the 5a 75w that has me thinking it needs not just the plug, but a fat box with the two cords hanging from it too, thoughts, suggestions pls, a grateful disabled veteran. Will this work? About Apple USB power adapters - Apple Support Isnt that the job of the adapter to regulate the incoming power to the output power? Ill assume the TV is 12v and requires 4amps or less based on your noted original adaptor? It ended up being a pretty big box. Conversely, an adapter may be rated at 5A but can withstand currents up to 8A. If there are only two resistors you can use: Rp=(R1*R2)/(R1+R2) Our expert industry analysis and practical solutions help you make better buying decisions and get more from technology. These type of appliences never have removable powercords so thought is required prior. And once that happens, it can be complicated to figure out which goes with which. The polarity is -c-+. The article stated that an adapter with a current too high wont cause damage to the cord or device. Both have a positive polarity though. I am looking for a 12-volt adapter amongst the hoard that I have. Every new device that comes out usually has a custom one. Quick question: Am I supposed to match the specs from the power adapter to my laptop battery or the laptop itself? The new adapter works the 20 Watt bulb in the tree but does not turn the color wheel. They only had a 4.5v 700 mA charger and he tried plugging it in but it didnt workIm afraid its fried because we cant turn it on anymore. These two passages seem to me to contradict each other: #1: The following might not cause damage, but the device will not work properly: I know that I have to observe the proper polarity, but I cant seem to find a transformer that is provide with just bare wires. Another AT&T dealer (surprising) replaced it. But what if you accidentally (or purposefully) use the wrong adapter? Polarity is positive with the + on the right. Input: 120V~60Hz No, the laptop gets 19v, but then reduces the voltage to output to the battery. You dont mention watts in the mix. Heres what you can expect in each scenario: You would expect to see all of the above based on a simple understanding of polarity, voltage, and current. Like I did with my weed whacker battery. If you grab an incompatible power adapter, your best case scenario is that it works, albeit not the way the manufacturer intended. All Rights Reserved. This is one of the oldest myths on video game collecting (been collecting for 30 years now) and I want to be the one ckearing it all for the video game scene and go tell them the truth! The short version: Voltage (V) should always be the same for both adapter and device. I have some universal converters that work fine with Chinese 2 pin ac adapters of the same rating but know that China uses a 220V, 50HZ system, whereas the US is 120V/60HZ. AC DC adaptors convert alternating current (AC) into direct current (DC), which is required for battery power on laptops. This is not correct. I need a 500mA 4v adapter and can only find replacement 500mA adapters that provide either 3v or 4.5v. Which one should you choose? Output 1 = (5V1A) Now if I can find a plug that will work in the EU that has the same output would it then work without me burning down my house? I am surprised that there is no markings on it at all showing the power requirements (check next to power input and also on the botto Sidenote, these come with 3 year warranty, so also make note of this to Belkin as they may send you a replacement. Now I can sleep and make a knowledgable decision! I have a 12v 0.5amp transformer that has open circuit voltage on 19v. No music came outjust a hum. The additional DC voltages are created by internal circuits. But you should not use a lower Amperage power supply on a ThinkPad needing more Amperage. The Amps are fine as adaptor is higher than required by the device. The information with the tree says, under care and use, Do not use with a voltage converter. So if it were the reverse image it would in fact be left and not right!!!! I have looked at universal plugs with adapters but have an issue with them as they are vague on differing polarities. will the powerbank charge the battery? MagSafe was introduced on January 10, 2006, in conjunction with the MacBook Pro, the first Intel-based Mac laptop, at the Macworld Expo.The connector is held in place magnetically so that if it is tugged (for example, by someone tripping over the cord), it will pull out of the . I = P/V Best use or borrow a 3amp or higher adapter ensuring that is of course 12volts. Match to laptop. Thats the amount of amps the adapter will put out. The key is to match the DC output of the adapter to the DC input of your device. But i found that the output of the woofer was like around 90% to my satisfaction than when it was working on the original Creative Adaptor.Besides the Adaptor is getting heated up. Ive since ordered a correct voltage ac cord with 12V4A, so I hope it actually works. This is usually indicated by the symbol: Is the replacement one compatible with the original? The charger I have states that it is 6VDC-150mA. As part of that process, I took all my power supplies and adapters and threw them into a box. Or, look for a diagram showing the polarity. The Top-Rated Power Adapters (2023) - Top Reviews by Tech Junkie This link also gives a general guide (like original thread here). I have a meter so I tested your theories and this is what I found. Great stories, great analogies, but it would have been soooo much better had you given Elaine an answer to her question! Is there a website to look up an adapter that you have no clue what device it is for? Can it work? Or best to step up/ step down like I do with my others that are stated as 110v AC? When I finally found the correctly labeled adapter and plugged it in, I still got just a humno music. Hi. 9 watts is not enough power and adaptor would probably get warm as your clock needs 15 watts It may work and wont damage the clock stereo as the adaptor is lower wattage than required but best be safe use the correct adaptor to ensure you dont overload/break the adaptor. From my High School Electrical Class teacher: ALL wires contain smoke. Brilliant article, which I too read too late to save an effects pedal for my guitar. Now imagine you hitch the boat trailer to your bicycle. I mistakenly plugged in what I thought was the right cord (my masking tape marking was no longer on it), but didnt think to check the power cords adapter output (24 VAC 1.5A 36VA) with the keyboards required input (DC in 10-12 volts) before plugging in. I ended up getting an used replacement from an independent computer repair shop for $20. Hi, i have 12v high torque gearbox reduction motor 15rpm. (more or less depends on the device), V should be same (more or less-depends on the device) But what about the data you enter? In this article, Im going to walk you through the process of digging through your junk drawer and finding the right power adapter for your device. PLUGED IT IN AND ALL LIGHTS CAME ON BUT DIDNTRUN THE UNIT. If there is a sign on the right, then it has negative polarity:. You must have deep pockets. It really depends which way the C is facing. FAQ: What Is a Switching Power Supply Best Used For? thank you. Polarity: The tip and sleeve (inside and outside of connector) must be the correct polarity. Recently brought and old keyboard, it came with a USA 2 pin Ac Dc Plug. Thanks! Power adapters for iPhone - Apple Support I was thinking that it was equal like 300mA=3.0A but I see now that 300mA=.3A. With new phone USB chargers 5v is standard across the board so the higher the amps you buy the better. Thoughts? if yes than how much?? This applies to most if not all of such design including the headphones and them huge speakers. or am I missing something? Here I place something different. The output one is 5V/1A and the other one is 5V/2.1A. If that was true 99.9% of your devices you use at home would go bang. The worlds largest professional society dedicated solely to the support of the industrial and systems engineering profession and individuals involved with improving quality and productivity. I found a spare AC Adapter labeled Netgear Output:12VDC 1.2A The block though is slightly bigger and heavier than the original. You should not worry. Determining the outputs and inputs of your adapters and devices is the hard part. After searching for awhile, I found a 6V 120-240V input with 2A or 2000mAh output and the polarity is the same as noted. Whenever you buy a device with a charger, immediately write the device info on a small piece of paper and use clear packing tape to tape it to the brick. How USB Charging Works, or How to Avoid Blowing Up Your Phone Hi Darren, The power adapter serves the purpose of converting AC voltage to a single DC voltage for your computer. So to correct something in this information. = 10.5W If I could get one style of adapter that worked on every computer appliance/device (including external hard drives) then Id be willing to pay a mint for it, and then get multiples of the adapter for backup. Well I have been doing some searching for batteries for my Asus A551XM Laptop. This is a weather station that is made of wood that is illuminated with LEDs that actually shine through the wood laminate. I got my first whiff of blue smoke and I could no longer listen to my tapes to practice for drum lessons. Its the 5a 75w that has me thinking it needs not just the plug, but a fat box with the two cords hanging from it too, thoughts, suggestions pls, aa grateful disabled veteran, I got an AMH A399U monitor with a Korean plug and power AC 100-240V 5a 75w. Thanks in advance and Ill wait patiently your kind answers! If you multiply the voltage by the current, you get the wattage. 1. And consudering this, my replacement adapter wouldnt harm my Sega Genesis model 2? Depends on what type of adaptor and device you are describing here. But, a Samsung product, The Galaxy Note 3, received a 5.3V and 2A of electricity, which received 10.6W (watt) of power. I have a question that you may have answered implicitly above. Trying to think through this if its rated for 5.5 volts but can run on four AAs, might a 6 volt adapter actually be ok? document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); Save my name and email and send me emails as new comments are made to this post. Plus the gauge of the wire is different. Thanks in advance ;). Yeah. The trick is to not let it out in the first place.. today i tried to connect my 5v dc (USB power) sound with 12v dc adapter after that it shows power on bu no sound. And resistance relates to the size of the pipe. Wild part is I had two different flashlights like that but different styles/brands and I just mixed up the cords but that was different enough to be a problem. This is in relation to voltage stepping and equipment from around the globe. It is used to supply power to electronic devices, such as laptops, cell phones, and portable speakers. A powerline adapter has the ability to send your music, photo, video, and computer data over your household's existing electrical wiring just like it would over Ethernet cables. AMPS: are important to be always equal to or higher than required (never less) as it controls the flow rate of power to the device. My dog chewed on my SeaGate External Harddrive wire so now Im trying to find a replacement AC Adapter. To charge my supported QC.3.0 phone? I could probably sell you one for about $10. Thats true? So, the wrong adapter did not actually ruin my device, but the wrong adapter itself is now dead. You also need to calculate the power W (wattage) of your phones charger plug and compare it with your powerbank, power W. Curiosity how can the layman measure the amperage? The speaker one, potato one and motor one are probably the easiest to do at home. Thanks Cherie for the feedback! Does the Apple iPhone 14 come with a charger in the box? Thanks in advance for any help. On the adapter in question which is called for 1.0 amps input, the plug on the cord going into AC wall says 10amp 120V and on this particular AC adapter cord, its printed on the female end and NOT on the AC male plug end. Output 2 = (5V2.1A) Can i use dell laptop charger for this machine charging ? Ensure your device is rated to the same voltage and to equal or below the max. 3.42A. An AC adapter or AC/DC adapter is a type of external power supply, often enclosed in a case similar to an AC plug. They don;t cost a lot on Ebay. The second worst-case scenario is that you fry the gadget you are trying to power up. What Is a Powerline Adapter? - Lifewire But I think these days if there's power it will be a "normal" plug for that airline. Im using it since last Sunday. The adapters are just really similar It may never cause a problem then again the speaker or the adapter may give out. Its not whether the position of the + or is on the left or right that determines the polarity but what sign is attached to the solid circle. Bought a new charger and it appears the pin is wrong size. So, you dont have any problem to connect your phone to your computer or powerbank. 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. I paid about $80.00 for this thing about 7 years ago and as far as I know, they are no longer being made so I would prefer not to fry it if possible. -AC Input: 100 ~ 240V 50 ~ 60Hz Extra amps are fine, just not used, like the tractor. Input specifications do not indicate polarity any clues on where I can go to look this up? I live in Spain , the current Input are rated at 100-240. Your email address will not be published. The adapter wires are solid black and the other is black with white strip. Current: adapter >=device, I am using adapter 15 V 0.5 Am- 7.5 W The ubiquitous black adapter with its own AC plug often overlaps the adjacent socket, unless a "wall wart-aware" power strip like this one is used. I wasnt aware of the polarity issue he brought up, but I will take that into account from now on. To be honest, I never bother looking at the Power Cords ratings especially all the removable ones that belong to shavers, laptops, PCs, Monitors etc. The USB also is the symbolized for 5V voltage. The reason I was looking this up was to find a suitable off brand adapter for my blood pressure cuff. Perhaps ignore my above comment as I cant delete it and may not be accurate or not explain well. Jack of Talent, thank you very much. The charging brick is included with the new 16-inch MacBook Pro. And thats why I have a label maker. Elaine just needs to be sure that the Voltage and polarity on her universal adapter matches that of her device and she will be fine. More info needed. Explanations I get on this are often confusing for me most likely because I am having trouble grasping the basic concept of parallel resistors and power output along with the labeled ratings.. Maybe an analogy might do the trick I just cant seem to find a good one. And that is what I assumed. Likewise, each electronic device is specifically designed to accept a certain DC input. Thanks so much! The Amp rating on the plug just denotes what it is capable of, eample: one wouldnt use the same cord for a heater that is used on say a table lamp. But you also want to make sure the current matches, too. Pair it with iPhone 8 or later for fast charging 50 percent battery in around 35 minutes. Or pair it with the iPad Pro and iPad Air for optimal charging performance. Its my opinion that manufacturerers should do the labeling; place a device label on the adapter brick for problematic adapter matching. All they need to do is add a discaimer . = 5W A power adapter is a device that helps to convert one form of electrical energy into another. Great article. You also dont have to worry about polarity with USB. This is because the voltage difference is within specs, and I am GUESSING you could go even higher or lower in voltage. I have a universal adapter that allows you to switch polarity. That and the W too. -DC Output: 19.5V 11.8A 230W I learned that lesson early, when I plugged in my tiny tiny cassette player into this mammoth brick. Alright, I hope this message will help you with your problem. It is model F4U041 and the coding is something like this: if i use 19 volt 3.5 amp on my device the original adepter was 19 volt 8amp.what will happen?? Its helps but its not a perfect system. Another concern is that a dedicated adapter provides stable, clean voltage and a universal does not.
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