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Question:

Is the laptop power adapter AC and DC?

Is the laptop power adapter AC and DC?

Answer:

In the power adapter has a nameplate, marked above the power, input and output voltage and current and other indicators, with particular attention to the input voltage range, if the nameplate indicates that the input voltage is AC 110V, then in China's 220V mains voltage Plug it will burn.
Most laptop power adapters can be used for 100 ~ 240V AC (50 / 60Hz). Basically, most of the notebook computers are external power supply, with a power cord and the host connection, which can reduce the size and weight of the host, only a very small number of models built in the host power.
Notebook power adapter is not AC and DC. Power adapter is a small portable electronic equipment and electrical and electronic power supply conversion equipment, generally by the shell, power transformers and rectifier circuit, the working power for the exchange (China AC standard AC 220V), according to its output Types can be divided into AC (AC) output type and DC (DC) output type. General notebook power adapter are DC output, is the exchange of DC conversion equipment.

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