What a fantastic thread you guys. Also a lot of great comments from our user community! 4.73" x 2.11" x 1.27". I accidentally-on-purpose used a 5V 2A adapter with a 12V 1A device and the device conked out on me. Most USB wall adapters will be 5 V adapters and have a current rating well over .5 A.
Now, I have a some questions related to video games: Thank you for writing this! I own a few 18v and 24v cordless drills which are perfect except for the battery which costs almost as much as the drill brand new. Everyone ask mostly about laptops or cellphones. Thanks in advance. can you help me out please? Device no longer works does work on a duplicate power brick. The chart you are both looking for is already (usually) included in the wall adapter and on the appliance. 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. Here is the info I have on the adapter and battery: Class 2 power supply Input 120VAC 60Hz 21.6W Output 9VDC 500mA. To understand what these three terms mean, it helps to think of electricity as water flowing through a pipe.
There are so many different wall adapters that a list of them all would be impossible to maintain. Theyve sent me at least 10 replacement adapters. I forgot to ask and its worth a shot since I rarely come across people like you; Would you happen to have a similarly beautiful explanation for how resistors work in series and in parallel? Institute of Industrial and Systems Engineers Used, YwRobot, MB-V2 is a multi-purpose module that plugs into our solderless breadboard CAT# PB-400 (sold separately) and provides DVE Model DV-1241. Output: 12V, 2.0A. Please help me. Current, as the term implies, refers to the flow rate. POWER ADAPTER OUTPUT :AC 17X2V0.84A This was a really helpful article! 6' cord with 2.5mm id coax 9 Vdc 300 ma. The only standards that electronics (usually) conform to are in regards to the wire gauge and respective maximum current. 1996-2022 Parts Express All Rights Reserved725 Pleasant Valley Dr.Springboro, OH 45066 USA, We use cookies to provide the best possible customer experience across this site, through third party ads and analysis of web data. And if there is no information on the label, proceed with extreme caution. Now, you can calculate your phone chargers power and compare it with your powerbanks power. I have a meter so I tested your theories and this is what I found. I have A DynaDoc power station that takes 15 V but I have a charger that is a 1944. I used the reverse ac adapters for the base and handset of a uniden phone (D1788) which I didnt realize since it worked fine for 8 months, the difference in output was 7.8V vs 8 V. Now the base unit wont power on.any idea whether this can be repaired with relative ease or if Im S.O.L.? Look at the brick part of the adapter for the word OUTPUT. What you should look though is the Hz if they match. MY device input 5v ___500mA and my charger output is 6vDC600mA -c+ 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?
That adapter would have been fine. But that would prevent us from being forced to buy more crap! Basically any USB charger will work but the higher the amps it can output the faster it will charge at least until the phone reaches its limit. Thanks!
Cheers. Most of the time, companies will just buy an adapter from DVE or something for the specs they need (tip size, mah, voltage, polarity) and will work with a bunch of devices with the same needs. but the dc input and outputs still match? I have a 12v 0.5amp transformer that has open circuit voltage on 19v. This was the best simple summary of the article I could have imagined. Is there one you recommend? Copyright 2007-2021 groovyPost LLC | All Rights Reserved. Your laptop will simply be under voltage but not much. Ive since ordered a correct voltage ac cord with 12V4A, so I hope it actually works. 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.
I want to just keep it plugged in all the time at home. Also, if these details are missing from either the device or adapter is there a way to test them and find out what the voltage and/or polarity are? Volts are important here and unlike a laptop, the TV will most likely require exact voltage. As you noted that you have had several replacement adaptors and also different units and all have the same issue, it may well be spikes and fluctuations in power at the socket that is causing the issue and blowing out the adaptors. My issue is well everyone in my family, phones shorting out but I dont think its from a power supply being to hi. The reason I was looking this up was to find a suitable off brand adapter for my blood pressure cuff. I think this will work fine but I wouldnt mind a bit of reassurance. So? Those Apple parts get tricky as the iPad cable and USB plug are 2A and the iPhone cable and plug are 1A. Hi Jack. Lol) a replacement (9V 0.2A DC). The AC/DC adaptor has the following information on it: Input: 120 VAC 60Hz 135 mA. What is the volt requirement of the device? 1000 mA Model: MTP051UL-055075. The real solution would have been for the manufacturer to provide a charger with the unit in the original packaging. Isnt that the job of the adapter to regulate the incoming power to the output power? Milliamperes. This includes polarity. Yup! Very reasonable. I found one on ebay and the seller sent me picture of the adapter. Just saw this. I have a Brother P-Touch PT-2300 label maker. No! good to know! The back and side of the radio clearly say, Power Source: 7.5V 400mA AC/DC Adapter The charger I have states that it is 6VDC-150mA. The margin is there for a reason, and the more complicated the device, the more potential for something to go wrong. 6' long cable with 2.5mm coax plug, center Labtec AD-6 Input: 120 Vac, 60 Hz, 14W Selectable Output: 3, 4.5, 6, 7.5, 9 Vdc Current: 650mA DVR# DSA-0421S-501. Sounds like you need an electrician to check your homes wiring as that is a lot of adaptors and units. 1. Receive updates on new products & special offers. Having a separate and. Output: 20VDC, 2.25A = 45 Watts. You could buy the 65 watt adapter and *probably* be fine it produces nearly as much power as the original, and your device probably doesnt draw its maximum current most of the time. Not enough items available. 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. Learn more about AC adapters, which are external power supplies that convert alternating current (AC) from a wall outlet to a direct current (DC) needed by an electronic device. Id like to use in South Korea where uses 220v, so is it safe to use this adapter? I turned it off, it made a little different noise the second time and then it didnt work and I smelled smoke. Thank you very much! Input: 100-120V 0.4A 60Hz. Good tip. I have a record player that I bought in the US.
So my adapter matches the Voltage and current but not the polarity so i gues i should not use this adapter. Im shopping around on Amazon and so much items spec make absolutely no sense or are overkill. Both have a positive polarity though. Current: adapter >=device, I am using adapter 15 V 0.5 Am- 7.5 W The one thing I would add was the best tip I ever heard on the topic. I = sqrt(P/R), soin your example: Using an adapter with a higher voltage will cause the connected device to detect an overvoltage. Thank you. Back before I knew alot about electronics, I plugged a 16V adapter into a device that needed around 7 volt. Its not that complicated. Probably not much. Bear in mind DC devices are polarity sensitive and be sure you know how to use a meter less you fry it. another rating you might see on a 300 milliamperes device is .3A. Thoughts? How many watts should it be? Input: 120 Vac, 60 Hz, 17 W. Output: 9 Vdc 1000 mA. -AC Input: 100 ~ 240V 50 ~ 60Hz Perfect for small appliances and breadboard projects. It seems many of these wall transformers will vary the voltage under different loads very good ones may not but basic ones may well do. 2. 2-prong plug (round pins) for *Free shipping for continental US addresses only. Using an adapter with a higher voltage will cause the connected device to detect an overvoltage. But there are many instances where an incompatible power adapter will plug into your device. -DC Output: 19V 12.2A 230W When learning how to choose an AC adapter, it is also necessary to understand power adapter specifications. 15V 4A DC Power Supply AC Adapter with 2.1 x 5.5mm Center Positive (+) Plug, 12V 2A DC Switching Power Supply AC Adapter with 2.1 x 5.5mm Center Positive (+) Plug, 12V 5A DC Switching Power Supply AC Adapter with 2.5 x 5.5mm Plug, 9V 1A Power Supply AC Adapter with 6 ft. Cord 2.1 x 5.5mm Center Negative (-) Plug, 24V 5A DC Switching Power Supply AC Adapter with 2.5 x 5.5mm Plug, 19V 4.8A DC Switching Power Supply AC Adapter with 2.5 x 5.5mm Center Positive (+) Plug, 12V 2000mA Switching Power Supply US and EU 2.1mm plug, DC 36V 5A 5000mA 180W Switching Power Supply AC Adapter - 2.5 x 5.5mm Center Positive Plug 100~240V, PS-SP11111 12V 3A Power Supply AC Adapter with 2.1 x 5.5mm Plug, 12V 6A Switching Grounded DC Power Supply AC Adapter with 2.5 x 5.5mm Center Positive (+) Plug, Replacement Google Home 16.5V 2.5A DC Power Supply AC Adapter 1.35 x 3.5mm Center Positive (+) Plug, Quick Charge 3.0 Dual USB Universal Wall Charger 27W for Galaxy S20 S10 / LG G9 V60 / iPhone 11 10, 3V 500mA Switching Power Supply AC Adapter Without Tip, Huntkey HKA03619021-8C 19V 2.1A 40W AC/DC Power Supply, 12V 500mA DC Power Supply AC Adapter with 2.1 x 5.5 mm Center Negative (-) Plug, 12V 2.5A DC Power Supply AC Adapter with 2.1 x 5.5mm Center (+) Positive Plug, 12V DC 3A AC Adapter Power Supply with 2.1 x 5.5mm Center Positive Tip, 5V 4.8A DC Power Supply 24W USB Wall Charger AC Adapter 2 Port, 12V 800mA DC Power Supply AC Adapter with 2.1 x 5.5 mm Center Positive (+) Plug, RCA 30W USB-C and USB-A Power Delivery (PD) Wall Charger with Foldable Prongs, 12V 500mA DC Power Supply AC Adapter with 3.5 mm Center Positive (+) Plug. Output 12V dc 1.8a. I always used the if it fits its the right one mentality, guess Battery:6Cells 4700 mAh 50 Whrs The short version: Voltage (V) should always be the same for both adapter and device. To choose the right AC adapter for your device, find one with voltage and current ratings that match those of the device. Brilliant article, which I too read too late to save an effects pedal for my guitar. Wall adapters that give you a USB port for charging arent nearly as tricky. Perhaps a review will address this if it existed! This was a good explaination and I always had a doubt with these confusing things written on adapters and other devices. The adapter will run hot until it cant handle anymore and either turn off or melt. So, manufacture to manufacture the placement of the AC cord specifications changes. thank you very much sire. That fuse in your plug is to protect your device from sudden surge of electricity. Again, thanks.
Output: 12 Vdc, 5 Amp. Depending on the region, AC input can be 110/120V or 220/240V. I can only use these sweepers as I have mobility issues where I cant drag a hoover around with me. Well I have been doing some searching for batteries for my Asus A551XM Laptop. In normal use, its wall adapter takes (UK 240 volt) AC mains and produces a 12 volt, 2 amp DC output. These are most useful for travelers researching how to choose the right power adapter that will work in other parts of the world. Feature image by Qurren GFDL (http://www.gnu.org/copyleft/fdl.html) or CC-BY-SA-3.0 (http://creativecommons.org/licenses/by-sa/3.0/), via Wikimedia Commons. First USBs dont come through in 12VDC. The following will cause damage to your device: Higher voltage adapter than device rating. Great job !!! Current must be same or higher. I am in Australia and have 240v power supply. Input: 100-240V, 50-60 Hz, 0.7 Amp max. I have a automatic Blood pressure measuring machine (bettery as well as charger). View cart for details. This happens if the adapters VDC is lower than the devices input voltage even when their current ratings are the same.
This has happened with two different boosters and a third that was another brand/unit altogether. It will usually consist of three circles, with a plus or minus on either side and a solid circle or C in the middle. Some manufacturers put a lot of information on the label. I agree with what you are saying and sometimes the adaptors given especially with some Mobiles/Tablets & in this case a Powerbank are cheap and barely meet the min requirements. No, it is too high a voltage (12v versus the 6v you need!). Corporate & Government Employee Discounts, Dell Slim Power Adapter - 65 Watt 7.4mm with 1 Meter Power Cord and AC Duckhead, Dell 45-Watt 3-Prong AC Adapter with 1meter Power Cord, Legrand 1-Port USB-C Wall Charger with Power Delivery, 18W - Power adapter - 18 Watt - 3 A (USB-C with Power Delivery) - black, Targus - Power adapter - AC - 65-watt - output connectors: 2 - black, Kensington International Travel Adapter - power adapter, C2G 2-Port USB Wall Charger - AC to USB Adapter, Dell Slim Power Adapter - 45-Watt Type-C with 1 Meter Power Cord and AC Duckhead, Dell Slim Power Adapter - 65-Watt Type-C with 1 Meter Power Cord, Dell Rugged Power Adapter - 90-Watt 7.4mm Right Angle with 1 Meter Power Cord, Dell E5 90-Watt 3-Prong AC Adapter with 1meter Power Cord, US, View orders and track your shipping status, Create and access a list of your products. Here's Chrome does an excellent job of storing your browsing history, cache, and cookies to optimize your browser performance online. The whole power adapter electrics situation is a global miserable nightmare with nothing Ive seen resembling a nice easy color code or similar to make it simple and uncomplicated. Every new device that comes out usually has a custom one. Tweaking any of these three variables increases or decreases the amount of electrical power sent to your device. You also need to calculate the power W (wattage) of your phones charger plug and compare it with your powerbank, power W. What Im confused about is the input amps. its that simple if someone understands the math then please do the problem and share it w those of us who just dont. There is a positive pole (+) and a negative pole (-). Output is only DC. Not much. AC-DC wall adapters aka "wall warts" are power supplies that convert 120Vac (or 220Vac) to a lower DC voltage. Is there such a thing as a (relatively) high current variable voltage adapter which is capable of furnishing (relatively) high current levels, with voltages that can be incrementally increased from very low to levels that seem to make a device operate properly? Will it power the laptop? However, Id go with the 90 Watt supply, since it is more power than the original could possibly supply; kinda like switching from your normal boat-towing car to a pickup truck. Its barrel or ring has negative polarity. Thanks. Its like filling a balloon. The one the lady put with the sweeper doesnt give the sweeper enough power, I would be better off and quicker trying to teach the dust to levitate and take itself to the dustbin! From your excellent example of a water hose, I can see that: if I ran it on 3v, it would simply turn slowly; if I ran it on 4.5v, it may burn up the motor.
Now, I have a some questions related to video games: Thank you for writing this! I own a few 18v and 24v cordless drills which are perfect except for the battery which costs almost as much as the drill brand new. Everyone ask mostly about laptops or cellphones. Thanks in advance. can you help me out please? Device no longer works does work on a duplicate power brick. The chart you are both looking for is already (usually) included in the wall adapter and on the appliance. 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. Here is the info I have on the adapter and battery: Class 2 power supply Input 120VAC 60Hz 21.6W Output 9VDC 500mA. To understand what these three terms mean, it helps to think of electricity as water flowing through a pipe.
There are so many different wall adapters that a list of them all would be impossible to maintain. Theyve sent me at least 10 replacement adapters. I forgot to ask and its worth a shot since I rarely come across people like you; Would you happen to have a similarly beautiful explanation for how resistors work in series and in parallel? Institute of Industrial and Systems Engineers Used, YwRobot, MB-V2 is a multi-purpose module that plugs into our solderless breadboard CAT# PB-400 (sold separately) and provides DVE Model DV-1241. Output: 12V, 2.0A. Please help me. Current, as the term implies, refers to the flow rate. POWER ADAPTER OUTPUT :AC 17X2V0.84A This was a really helpful article! 6' cord with 2.5mm id coax 9 Vdc 300 ma. The only standards that electronics (usually) conform to are in regards to the wire gauge and respective maximum current. 1996-2022 Parts Express All Rights Reserved725 Pleasant Valley Dr.Springboro, OH 45066 USA, We use cookies to provide the best possible customer experience across this site, through third party ads and analysis of web data. And if there is no information on the label, proceed with extreme caution. Now, you can calculate your phone chargers power and compare it with your powerbanks power. I have a meter so I tested your theories and this is what I found. I have A DynaDoc power station that takes 15 V but I have a charger that is a 1944. I used the reverse ac adapters for the base and handset of a uniden phone (D1788) which I didnt realize since it worked fine for 8 months, the difference in output was 7.8V vs 8 V. Now the base unit wont power on.any idea whether this can be repaired with relative ease or if Im S.O.L.? Look at the brick part of the adapter for the word OUTPUT. What you should look though is the Hz if they match. MY device input 5v ___500mA and my charger output is 6vDC600mA -c+ 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? That adapter would have been fine. But that would prevent us from being forced to buy more crap! Basically any USB charger will work but the higher the amps it can output the faster it will charge at least until the phone reaches its limit. Thanks!
Cheers. Most of the time, companies will just buy an adapter from DVE or something for the specs they need (tip size, mah, voltage, polarity) and will work with a bunch of devices with the same needs. but the dc input and outputs still match? I have a 12v 0.5amp transformer that has open circuit voltage on 19v. This was the best simple summary of the article I could have imagined. Is there one you recommend? Copyright 2007-2021 groovyPost LLC | All Rights Reserved. Your laptop will simply be under voltage but not much. Ive since ordered a correct voltage ac cord with 12V4A, so I hope it actually works. 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. I want to just keep it plugged in all the time at home. Also, if these details are missing from either the device or adapter is there a way to test them and find out what the voltage and/or polarity are? Volts are important here and unlike a laptop, the TV will most likely require exact voltage. As you noted that you have had several replacement adaptors and also different units and all have the same issue, it may well be spikes and fluctuations in power at the socket that is causing the issue and blowing out the adaptors. My issue is well everyone in my family, phones shorting out but I dont think its from a power supply being to hi. The reason I was looking this up was to find a suitable off brand adapter for my blood pressure cuff. I think this will work fine but I wouldnt mind a bit of reassurance. So? Those Apple parts get tricky as the iPad cable and USB plug are 2A and the iPhone cable and plug are 1A. Hi Jack. Lol) a replacement (9V 0.2A DC). The AC/DC adaptor has the following information on it: Input: 120 VAC 60Hz 135 mA. What is the volt requirement of the device? 1000 mA Model: MTP051UL-055075. The real solution would have been for the manufacturer to provide a charger with the unit in the original packaging. Isnt that the job of the adapter to regulate the incoming power to the output power? Milliamperes. This includes polarity. Yup! Very reasonable. I found one on ebay and the seller sent me picture of the adapter. Just saw this. I have a Brother P-Touch PT-2300 label maker. No! good to know! The back and side of the radio clearly say, Power Source: 7.5V 400mA AC/DC Adapter The charger I have states that it is 6VDC-150mA. The margin is there for a reason, and the more complicated the device, the more potential for something to go wrong. 6' long cable with 2.5mm coax plug, center Labtec AD-6 Input: 120 Vac, 60 Hz, 14W Selectable Output: 3, 4.5, 6, 7.5, 9 Vdc Current: 650mA DVR# DSA-0421S-501. Sounds like you need an electrician to check your homes wiring as that is a lot of adaptors and units. 1. Receive updates on new products & special offers. Having a separate and. Output: 20VDC, 2.25A = 45 Watts. You could buy the 65 watt adapter and *probably* be fine it produces nearly as much power as the original, and your device probably doesnt draw its maximum current most of the time. Not enough items available. 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. Learn more about AC adapters, which are external power supplies that convert alternating current (AC) from a wall outlet to a direct current (DC) needed by an electronic device. Id like to use in South Korea where uses 220v, so is it safe to use this adapter? I turned it off, it made a little different noise the second time and then it didnt work and I smelled smoke. Thank you very much! Input: 100-120V 0.4A 60Hz. Good tip. I have a record player that I bought in the US.
So my adapter matches the Voltage and current but not the polarity so i gues i should not use this adapter. Im shopping around on Amazon and so much items spec make absolutely no sense or are overkill. Both have a positive polarity though. Current: adapter >=device, I am using adapter 15 V 0.5 Am- 7.5 W The one thing I would add was the best tip I ever heard on the topic. I = sqrt(P/R), soin your example: Using an adapter with a higher voltage will cause the connected device to detect an overvoltage. Thank you. Back before I knew alot about electronics, I plugged a 16V adapter into a device that needed around 7 volt. Its not that complicated. Probably not much. Bear in mind DC devices are polarity sensitive and be sure you know how to use a meter less you fry it. another rating you might see on a 300 milliamperes device is .3A. Thoughts? How many watts should it be? Input: 120 Vac, 60 Hz, 17 W. Output: 9 Vdc 1000 mA. -AC Input: 100 ~ 240V 50 ~ 60Hz Perfect for small appliances and breadboard projects. It seems many of these wall transformers will vary the voltage under different loads very good ones may not but basic ones may well do. 2. 2-prong plug (round pins) for *Free shipping for continental US addresses only. Using an adapter with a higher voltage will cause the connected device to detect an overvoltage. But there are many instances where an incompatible power adapter will plug into your device. -DC Output: 19V 12.2A 230W When learning how to choose an AC adapter, it is also necessary to understand power adapter specifications. 15V 4A DC Power Supply AC Adapter with 2.1 x 5.5mm Center Positive (+) Plug, 12V 2A DC Switching Power Supply AC Adapter with 2.1 x 5.5mm Center Positive (+) Plug, 12V 5A DC Switching Power Supply AC Adapter with 2.5 x 5.5mm Plug, 9V 1A Power Supply AC Adapter with 6 ft. Cord 2.1 x 5.5mm Center Negative (-) Plug, 24V 5A DC Switching Power Supply AC Adapter with 2.5 x 5.5mm Plug, 19V 4.8A DC Switching Power Supply AC Adapter with 2.5 x 5.5mm Center Positive (+) Plug, 12V 2000mA Switching Power Supply US and EU 2.1mm plug, DC 36V 5A 5000mA 180W Switching Power Supply AC Adapter - 2.5 x 5.5mm Center Positive Plug 100~240V, PS-SP11111 12V 3A Power Supply AC Adapter with 2.1 x 5.5mm Plug, 12V 6A Switching Grounded DC Power Supply AC Adapter with 2.5 x 5.5mm Center Positive (+) Plug, Replacement Google Home 16.5V 2.5A DC Power Supply AC Adapter 1.35 x 3.5mm Center Positive (+) Plug, Quick Charge 3.0 Dual USB Universal Wall Charger 27W for Galaxy S20 S10 / LG G9 V60 / iPhone 11 10, 3V 500mA Switching Power Supply AC Adapter Without Tip, Huntkey HKA03619021-8C 19V 2.1A 40W AC/DC Power Supply, 12V 500mA DC Power Supply AC Adapter with 2.1 x 5.5 mm Center Negative (-) Plug, 12V 2.5A DC Power Supply AC Adapter with 2.1 x 5.5mm Center (+) Positive Plug, 12V DC 3A AC Adapter Power Supply with 2.1 x 5.5mm Center Positive Tip, 5V 4.8A DC Power Supply 24W USB Wall Charger AC Adapter 2 Port, 12V 800mA DC Power Supply AC Adapter with 2.1 x 5.5 mm Center Positive (+) Plug, RCA 30W USB-C and USB-A Power Delivery (PD) Wall Charger with Foldable Prongs, 12V 500mA DC Power Supply AC Adapter with 3.5 mm Center Positive (+) Plug. Output 12V dc 1.8a. I always used the if it fits its the right one mentality, guess Battery:6Cells 4700 mAh 50 Whrs The short version: Voltage (V) should always be the same for both adapter and device. To choose the right AC adapter for your device, find one with voltage and current ratings that match those of the device. Brilliant article, which I too read too late to save an effects pedal for my guitar. Wall adapters that give you a USB port for charging arent nearly as tricky. Perhaps a review will address this if it existed! This was a good explaination and I always had a doubt with these confusing things written on adapters and other devices. The adapter will run hot until it cant handle anymore and either turn off or melt. So, manufacture to manufacture the placement of the AC cord specifications changes. thank you very much sire. That fuse in your plug is to protect your device from sudden surge of electricity. Again, thanks.
Output: 12 Vdc, 5 Amp. Depending on the region, AC input can be 110/120V or 220/240V. I can only use these sweepers as I have mobility issues where I cant drag a hoover around with me. Well I have been doing some searching for batteries for my Asus A551XM Laptop. In normal use, its wall adapter takes (UK 240 volt) AC mains and produces a 12 volt, 2 amp DC output. These are most useful for travelers researching how to choose the right power adapter that will work in other parts of the world. Feature image by Qurren GFDL (http://www.gnu.org/copyleft/fdl.html) or CC-BY-SA-3.0 (http://creativecommons.org/licenses/by-sa/3.0/), via Wikimedia Commons. First USBs dont come through in 12VDC. The following will cause damage to your device: Higher voltage adapter than device rating. Great job !!! Current must be same or higher. I am in Australia and have 240v power supply. Input: 100-240V, 50-60 Hz, 0.7 Amp max. I have a automatic Blood pressure measuring machine (bettery as well as charger). View cart for details. This happens if the adapters VDC is lower than the devices input voltage even when their current ratings are the same.
This has happened with two different boosters and a third that was another brand/unit altogether. It will usually consist of three circles, with a plus or minus on either side and a solid circle or C in the middle. Some manufacturers put a lot of information on the label. I agree with what you are saying and sometimes the adaptors given especially with some Mobiles/Tablets & in this case a Powerbank are cheap and barely meet the min requirements. No, it is too high a voltage (12v versus the 6v you need!). Corporate & Government Employee Discounts, Dell Slim Power Adapter - 65 Watt 7.4mm with 1 Meter Power Cord and AC Duckhead, Dell 45-Watt 3-Prong AC Adapter with 1meter Power Cord, Legrand 1-Port USB-C Wall Charger with Power Delivery, 18W - Power adapter - 18 Watt - 3 A (USB-C with Power Delivery) - black, Targus - Power adapter - AC - 65-watt - output connectors: 2 - black, Kensington International Travel Adapter - power adapter, C2G 2-Port USB Wall Charger - AC to USB Adapter, Dell Slim Power Adapter - 45-Watt Type-C with 1 Meter Power Cord and AC Duckhead, Dell Slim Power Adapter - 65-Watt Type-C with 1 Meter Power Cord, Dell Rugged Power Adapter - 90-Watt 7.4mm Right Angle with 1 Meter Power Cord, Dell E5 90-Watt 3-Prong AC Adapter with 1meter Power Cord, US, View orders and track your shipping status, Create and access a list of your products. Here's Chrome does an excellent job of storing your browsing history, cache, and cookies to optimize your browser performance online. The whole power adapter electrics situation is a global miserable nightmare with nothing Ive seen resembling a nice easy color code or similar to make it simple and uncomplicated. Every new device that comes out usually has a custom one. Tweaking any of these three variables increases or decreases the amount of electrical power sent to your device. You also need to calculate the power W (wattage) of your phones charger plug and compare it with your powerbank, power W. What Im confused about is the input amps. its that simple if someone understands the math then please do the problem and share it w those of us who just dont. There is a positive pole (+) and a negative pole (-). Output is only DC. Not much. AC-DC wall adapters aka "wall warts" are power supplies that convert 120Vac (or 220Vac) to a lower DC voltage. Is there such a thing as a (relatively) high current variable voltage adapter which is capable of furnishing (relatively) high current levels, with voltages that can be incrementally increased from very low to levels that seem to make a device operate properly? Will it power the laptop? However, Id go with the 90 Watt supply, since it is more power than the original could possibly supply; kinda like switching from your normal boat-towing car to a pickup truck. Its barrel or ring has negative polarity. Thanks. Its like filling a balloon. The one the lady put with the sweeper doesnt give the sweeper enough power, I would be better off and quicker trying to teach the dust to levitate and take itself to the dustbin! From your excellent example of a water hose, I can see that: if I ran it on 3v, it would simply turn slowly; if I ran it on 4.5v, it may burn up the motor.