It is generally composed of shell, transformer, inductor, capacitor, control IC, PCB board and other components, its working principle from the AC input to DC output. Power adapters are widely used in security cameras, set-top boxes, routers, light bars, massage instruments and other equipment, commonly used in cell phones, LCD monitors and laptops and other small electronic products.
Power adapters can be divided into wall-plug type and desktop type according to the connection method. There are generally a few things to look for above the label of the power adapter. The first is the model number of the power adapter; the second is the "INPUT" (input) labeled on the power adapter; the third is the "OUTPUT" (output) labeled on the power adapter. This information is labeled with its manufacturer, wattage and power, input and output voltages and power flow and other indicators.