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What is a power adapter? definition?

November 19, 2019
Friends who are new to the power adapter may have a lot of doubts, for example: What is the power adapter? What is the relative function of using the power adapter? Under what circumstances is it better to use an external power adapter? The following Huaneng Hongye Xiaobian The problem is briefly introduced.

The power adapter is a power supply conversion device for small portable electronic devices and electronic appliances. It is generally composed of a casing, a power transformer and a rectifier circuit. It can be divided into an AC power adapter and a DC power adapter according to its input type; Power adapter and desktop power adapter. Widely used in telephone sub-machines, game consoles, language repeaters, walkmans, notebook computers, cellular phones and other equipment. There is a nameplate on the power adapter, which indicates the power, input and output voltage and current quantity, etc., especially pay attention to the range of input voltage. This is the so-called "travel power adapter", if the country has a voltage of only 100V This feature is very useful, some parallel laptops are only sold in the country of origin, without this design, even a single input voltage of 100V, will be burned when plugged in China's 220V mains voltage.

The purpose of the power adapter is to provide the energy needed for the device to function properly. It is to supply power to the device. Some external built-in, related to the application and designer of the device. Because the power adapter has corresponding over-temperature protection function, the power adapter can protect the device from high temperature damage, stable and reliable operation, and has over-current, over-voltage and overload protection functions, so that the device will not be affected by current and voltage. Damage caused by fluctuations. The external power adapter is flexible to use, and the same adapter can be used as long as it meets the parameters required by the device. However, in order to ensure the normal operation of the equipment, you must choose the power adapter produced by the regular manufacturer.


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