电源适配器的作用就是将我们平常使用的100至240伏特的交流电，通过变

电源适配器的作用就是将我们平常使用的100至240伏特的交流电，通过变压将电压降低，然后输出适合电器操作的电源。如果使用超过产品规定的安全电压，产品会容易出现问题，并对人造成很大的危害。

Results (English) 1:

The effect of the power adapter is 100 to 240 volts alternating current we normally use, the voltage is lowered by the transformer, and the output electrical power for operation. If you use a safe voltage exceeds the specified product, the product will be prone to problems, and have caused great harm.

Results (English) 2:

The power adapter's role is to use the 100 to 240 volts of AC power we normally use, reduce the voltage by changing voltage, and then output the power supply suitable for electrical operation. If the safety voltage exceeds the requirements of the product, the product will be prone to problems and cause great harm to people.

Results (English) 3:

The function of the power adapter is to reduce the voltage through the transformation of the 100-240 volt alternating current that we usually use, and then output the power suitable for the operation of the electrical appliances. If the safety voltage exceeds the specified value, the product will be prone to problems and do great harm to people.