Usually, all of this info is on the adapter sticker, remember you are always looking for the output V and mAh or A.Ī typical ac adapter sticker with all the essential info. The plug fits into your device and has the correct polarity.The adapter output is greater or equal to the devices rated mAh or A.The adapter output V matches the rated input V of the device.The general rule is to match the V and equal or beat the mAh, so if you are choosing an AC adapter to make sure you check the following, Once you have this key data you are ready to start looking for an adapter. mAh/A – consumes 3.34A to 4.62A of current.AC or DC – DC as indicated by the symbol.If you can not find anything have a look in the user manual or try a quick Google search. The first thing you want to do is find out what your device needs to operate so inspect the device and look for any labels or symbols that indicate either the voltage or mAh/A. If you can’t find one then this quick guide covers the basic things to look for. A look at your typical deviceīy far the easiest way is to check if your device has a specific power adapter already available, this takes the guesswork out of getting your own third-party power adapter. Often these are required for charging or powering battery operated devices. What is an AC adapter?īasically, it converts your mains power AC 110-240V AC into a smaller usually DC voltage that your small device needs to operate. Did you just get a gadget but the AC adapter is not included and you are always chewing through batteries? This guide will go through the basics of choosing a power supply that matches your device.
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