What is a power adapter?

Power adapter, also called external power supply, is a power supply and voltage conversion device for small portable electronic equipment and electronic appliances, and is often used in small electronic products such as mobile phones, LCD monitors and notebook computers. It consists of shell, transformer, inductor, capacitor, control IC, PCB and other components. Its working principle is to convert AC input into DC output; According to the connection mode, it can be divided into plug-in wall type and desktop type.

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Power adapter parameter description:

1, taking the model as an example, the model is XVE- 120 100, indicating several information including its manufacturer and main parameters. XVE starts with # # company code, and 120 100 indicates that this adapter is 12V65438+.

2. Input: AC 100-240V~50-60Hz is commonly used in China, which shows that this adapter can work normally under the AC voltage of 100V-240V;

3. OUTPUT, DC 12V= 1A, representing DC, rated voltage 12V, maximum current 1A. Two numbers can quickly calculate the wattage of the adapter, such as adapter, voltage 12V* current 1A= 12W (power), indicating that this power supply is 12W adapter.

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