^{First of all, from the power adapter concept, it is a small portable electronic device and electronic power supply power change device. Generally, it is composed of components such as a casing, a transformer, an inductor, a capacitor, a control IC , and a PCB board. It works by converting an AC input to a DC output. Power adapter, popularly speaking, also called "external power supply"}

^{What are the characteristics of the power adapter?}

^{1 : Protect your computer during a power outage}

^{Power converter ( AC to DC ), converted from AC to DC, and then through the computer, it can not protect the computer, but the computer has a storage device (also called charger), so it can be protected in the event of power failure computer.}

^{2 : Can automatically detect 100 - 240V AC ( 50/60Hz )}

^{Power adapters are widely used in routers, telephone handsets, game consoles, language repeaters, walkmans, notebooks, mobile phones and other devices. Most power adapters can automatically detect 100 - 240V AC ( 50/60Hz ).}

^{3 : Reduce the size and weight of the main unit}

^{The power adapter is a power supply conversion device for small portable electronic devices and electronic appliances. It connects the power supply externally and connects to the host computer by a line. This can reduce the size and weight of the mainframe. Only a very small number of devices and electrical appliances have built the power supply into the host. Inside.}

^{4 : "Nameplate" of the power adapter}

^{The power adapter is internally composed of a power transformer and a rectifier circuit. There is a nameplate on the power adapter. The above indicates the power, input and output voltage and current amount. Among them, pay attention to the range of the input voltage.}

^{The above is a one-by-one analysis of the concept, type, application and characteristics of the power adapter.}

^{As a widely used power supply product. At present, the power adapter has been widely used in: security cameras, set-top boxes, routers, light bars, massagers, notebooks, printers and other electronic devices. In the security industry and consumer electronics, power adapters are used in a wide range of applications.}