The dc power adapter is a power adapter for charging and using network extenders, routers, communication equipment, mobile phones, laptops and PSPs. Since the internal components of laptops and PSPs use direct current, and our living electricity is alternating current, there must be a way to convert the living electricity into direct current to power the computer and PSP. The dc power adapter was born in this situation.

Differences between AC and dc power adapter:
The appearance of common AC power adapters is usually accompanied by the symbol of AC, and the dc power adapter is DC. The inside of the AC adapter is mainly completed by the power transformer to complete the conversion output, and the inside of the DC adapter is composed of a rectifier circuit. The AC power adapters commonly found on routers have a copper core inside. When working, the power consumption will be lost in the form of useless power, and the input voltage range of the cable package power supply is very narrow, which cannot be adapted to a variety of use environments. The common dc power adapter is composed of a rectifier IC chip and a filter circuit, and the loss will be much lower.