What Is A Power Adapter Used For? 2019-12-30
The power adapter is also called external power supply (switching power adapter). It is a small portable electronic device and power supply transformer of electronic appliances. The 220V power supply voltage is used in the home, the general power supply voltage for general electronic products is about 5V to 20V. Therefore, the role of the power adapter is very important especially if you go to the United States and other countries. The voltage is different between countries, then 220V to 110V transformer is even more needed.
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