![]() Always use a transformer with electronics!įor more information and interesting links, see the next page. Where a converter would simply limit the amount of electrical output without really reducing it, a transformer actually reduces the voltage of the electricity going through it. You will also want to use a transformer if you are stepping up from 110 to 220. Also, converters should not be used for anything that is going to be plugged in longer than a few minutes.Įlectronic items need a transformer. This is okay for some electrical items like hair dryers but not good for anything electronic (something with a computer chip in it). Converters use an electronic switch to approximate 110v by rapidly cutting on and off the current received from a 220v source. If your equipment requires a specific voltage, then you need a converter or a transformer. Look at the different plug shapes shown below for various countries. In fact, most computers now have smart power supplies that are switchable between the two. Some items come with ability to use either 110v or 220v built right in. If you know that the plug shape is the only difference between your equipment and the electrical system you are planning to use, then an adapter is all you need. The typical USB port is known as USB Type-A. ![]() ![]() It does not change the voltage or electrical output in any way. Also Known As: USB Type-A, Regular USB Description: USB (universal serial bus) is the most common laptop and desktop connector by far. The adapter is simply a connector that changes the plug shape to match the outlet. ![]()
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