The power adapter of most laptops can be used for 100~240V AC (50/60Hz). Basically, most laptop computers have external power supply and use a power cord to connect with the host computer, which can reduce the volume and weight of the host computer. Only a few models have internal power supply inside the host computer.
There is a nameplate on the power adapter, which indicates the power, input and output voltage, current and other indicators. Pay special attention to the range of input voltage. This is the so-called "travel power adapter". This feature is very useful if you go to countries where the market voltage is only 110V. Some aquatic laptops are only sold in the country of origin. There is no such compatible voltage design, or even a single input voltage of 110V, It will burn out when it is plugged in at 220V mains voltage in China.Keywords:
- Switching Power Supply