What is a computer adapter?

Computer adapter is a power adapter. It is a power supply switching device for small portable electronic equipment and electronic appliances. It is generally composed of a casing, a transformer, an inductor, a capacitor, a control IC, a PCB board and other components.

#The operating environment of this article: windows10 system, thinkpad t480 computer.

Detailed introduction:

Power adapter (Power adapter) is a power supply conversion device for small portable electronic equipment and electronic appliances. It generally consists of a casing, a transformer, an inductor, a capacitor, a control IC, and a PCB board. It is composed of other components, and its working principle is to convert AC input to DC output; according to the connection method, it can be divided into wall-plug type and desktop type. Widely used in security cameras, set-top boxes, routers, light bars, massagers and other equipment.

Switching power supply products are widely used in industrial automation control, military equipment, scientific research equipment, LED lighting, industrial control equipment, communication equipment, power equipment, instrumentation, medical equipment, semiconductor refrigeration and heating, air purifiers, electronics Refrigerators, LCD monitors, LED lamps, communication equipment, audio-visual products, security, computer cases, digital products and instruments and other fields.

Related expansion:

There are generally several things to note on the label of the power adapter (hereinafter referred to as adapter). First, it is the model of the adapter. For example, the model of this adapter is XVE-120100. It tells us several information, including its manufacturer, main parameters, etc. The beginning of XVE is usually the ## company code, and 120100 indicates this. The adapter is 12V1A, and the 050200 is 5V2A; the second is the INPUT of the adapter. The one commonly used in China is AC100-240V~50-60Hz, which shows that this adapter can work normally under the AC voltage of 100V-240V. ; The third is the adapter's OUTPUT (output), DC 12V=1A, which represents a DC power with a rated voltage of 12V and a maximum current of 1A. The two numbers can quickly calculate the wattage of this adapter. For example, for this adapter, the voltage is 12V*current 1A=12W (power), which means that this power supply is a 12W adapter.

The power adapter of most laptop computers can be used with 100~240V AC (50/60Hz). Basically, most laptops have an external power supply and are connected to the host with a power cord. This can reduce the size and weight of the host. Only a few models have the power supply built into the host.

There is a nameplate on the power adapter, which indicates the power, input and output voltage and current. Pay special attention to the input voltage range. This is the so-called "travel power adapter". If you go to the market This feature is very useful in countries where the electricity voltage is only 110V. Some parallel-imported laptops are only sold in the country of origin. They do not have this compatible voltage design and even only have a single input voltage of 110V. Under our country's 220V mains voltage, It will burn if plugged in.

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