Power adapter, also known as external power supply, is a power supply voltage conversion device for small portable electronic equipment and electronic appliances. It is commonly used in small electronic products such as mobile phones, LCD monitors and notebook computers. The function of the power adapter is to convert the high voltage of 220 volts in the home into a stable low voltage of about 5 volts to 20 volts that these electronic products can work, so that they can work normally. The power adapter is generally composed of shells, transformers, inductors, capacitors, control ICs, PCB boards and other components. Its working principle is to convert AC input to DC output; it can be divided into wall adapters and desktop adapters according to the connection method.
The working principle of the power adapter is as follows:
1. Convert the 220V AC to a low-voltage AC through a reducing transformer.
2. Using 4 diodes, the unidirectional conductivity of the diodes is used to convert the alternating current into direct current (the size is changed).
3. Use capacitive filtering to change the DC current with varying size into a constant DC current.

Input/Output Specifications:

Input voltage：100V-240V AC, 50/60Hz  

Range voltage：86V-265V AC, 47-63Hz

Output power：13~18W

Output voltage：DC 5V~24V

Output current range ：750MA~3000MA   

Load Regulation：±5%

Efficiency Level： V or VI

Case No#& Case Size：K-040  70*27*39.8

Plug Holder： CCC/UL/PSE/VDE/KC

Safety Parameter:

Safety Standard： IEC61558/IEC60950/IEC60065/IEC62368/UL1310

Safety Cert：UL CUL CB CE TUV/GS KC FCC PSE  CCC 

Application:

Consumption electronic & Mobile device

Audio &Video, radio, TV device

Network communication device

Health & Personal Care,Medical device

Home Appliances electronics device

LED & Solar electronics device

Tester machine &industrial machine & exercise device or equipment