gourmet power adapter, also known as external power supply, is a kind of power supply and voltage conversion equipment used for electronic equipment and electrical appliances. It mainly converts the current from AC input to DC output, thus providing stable current for electrical appliances. Many people confuse the power adapter with the charger, but they are actually different. This paper introduces the function, principle, selection, use, maintenance and repair of power adapter. Let's take a look at it with Maigoo Xiaobian.

What is the purpose of the power adapter?

The power adapter is a small portable electronic equipment and power supply voltage conversion equipment for electronic appliances. It is often used in digital products such as mobile phones, liquid crystal displays, notebook computers, monitoring, etc., as an external power supply, and of course it is also used in industrial fields.

the function of the power adapter

the power adapter is used as a transformer and rectifier, which converts 22v household alternating current into 12v DC current and provides constant power for the equipment.

The power adapter is a conversion system from power to equipment and to battery, which can protect equipment and improve the safety performance of electrical appliances. If there is no power adapter, computers and notebooks will be easily burned if the voltage is unstable.

the power adapter can also play a role in protecting personal safety, because the power adapter can rectify the input current, effectively prevent electrical equipment from accidents such as electrical explosion and fire caused by excessive input current or sudden interruption of current, and protect personal safety.

working principle of monitoring power adapter, switching power adapter, poe power adapter, ac power adapter, usb power adapter

mobile phone power adapter, display screen power adapter, electronic keyboard adapter, water purifier power adapter

power adapters are not small in size, and are usually external, which can save space and is convenient to replace. Moreover, the commercial power used by power adapters is relatively high in voltage, which is dangerous to put inside the machine; However, some large-volume electrical appliances will have power adapters built into them. The principle of power adapter is to convert the current from AC input to DC output, and turn the unstable power supply into constant voltage DC required by electronic products through the conversion circuit, thus supplying power and charging objects.

Is the power adapter a charger? The power adapter is a device for changing the power supply of electronic equipment and electronic appliances. The charger is a high-frequency power supply technology and advanced intelligent dynamic adjustment charging technology. The current mode of the power adapter is from AC input to DC output. The current mode of the charger uses a constant current and limited voltage charging system. The charger only charges the battery, while the power adapter can not only charge the battery, but also supply power to the host. Maigoo Xiaobian reminds that the power adapter cannot be used as a charger. Detailed > >

choose 3C certified products for power adapters: power adapters are electronic products, and they need to undergo strict testing and obtain certification standards before they can be put on the market. The general certification standard in China is 3C certification. Detailed > >

power adapter power: the power adapter power is marked on the nameplate. Pay attention to the output voltage and current when choosing the adapter, and choose the product with appropriate power. Maigoo Xiaobian reminds that it is best to compare the power adapter with the original one with accurate voltage and high current. Detailed > >

Choose a good brand: Now many products sold online are substandard products that cut corners. It should be no problem to use them normally. Once an accident occurs, your equipment will be burned. It is not worth the loss to save dozens but burn thousands of notebooks.

Xiao Bian recommended Lenovo ThinkPadtype-c lipstick power supply 65W mobile phone tablet notebook adapter X28T48E48T48sE58X39T49 (black) Comments: 72,+store ThinkPad commercial option self-operated flagship store > > Dell's 65W (4.5 mm small head) notebook power cord adapter charger 79 Comments: 49,+store Dell's self-operated flagship store > > Lvlian 12V1A power adapter DC5.5*2.1mm charger is suitable for distributor converter set-top box switch power supply ￥39.9 Comments: 28,+store Lvlian digital brand flagship store > > > > Use and maintenance of power adapter Take the notebook power adapter as an example: create a good heat dissipation environment: when using the notebook in a high temperature environment, the power adapter should be placed in a ventilated place that is not exposed to direct sunlight; Don't put the power adapter near the cooling air outlet of the notebook. You can put the adapter sideways, or you can put a narrow plastic block or metal block between the adapter and the desktop.

stop using the power adapter in time if it is abnormal: when the power adapter makes a loud noise or even smokes, it is often damaged or has a fault, so it should be stopped immediately and repaired or replaced by a professional engineer.

Be careful when using the non-original power supply: there may be some differences in the output interface, voltage and current values of the non-original power adapter (or the nominal value does not match the actual value), which may affect the stability of the notebook operation if it is not properly matched. In addition, the power adapters of notebooks of the same brand and different models should also be used carefully. Detailed > >

What should I do if the notebook power adapter is very hot?

Take the notebook power adapter as an example:

Check the indicator light of the power adapter. If the indicator light is on, it is generally considered that there is no problem between the power supply and the adapter, and it must be ensured that the indicator light itself is not broken.

check whether there is electricity between the power adapter and the computer. This can be displayed by the indicator light of the notebook. When the notebook is charged with power, the charging indicator light will light up. Otherwise, it won't light. Or find a power adapter of the same brand to exchange.

observe the change of the indicator light of the computer. If you plug in the power adapter, you can see that the charging indicator lights on and off, and it doesn't go off for a long time, then there is something wrong with the interface of the power adapter in the notebook. Generally, the internal cable may be broken, the circuit board is aging, and the welding may fall off. Detailed > >

How to disassemble the computer power adapter

What brand of power adapter is good? Scutellaria baicalensis Georgi is mainly propagated by seeds, and it can also be propagated by cutting and rooting. Scutellaria baicalensis likes warmth and is resistant to cold, and the underground part can tolerate the low temperature of-3℃; Drought tolerance and fear of freezing, planting in poor drainage or rainy areas, poor growth environment, easy to cause root rot.

industry recommended brand Hangjia Huntkey DELTAFSP Quanhan Flextronics Kang Shu Science and Technology Acbel Feihong PHIHONGSeasonic Haiyun ThinkPad Guanyuda GVELITEON recommended reading Scutellaria baicalensis Georgi is mainly propagated by seeds, but also by cutting and rooting. Scutellaria baicalensis likes warmth and is resistant to cold, and the underground part can tolerate the low temperature of-3℃; Drought tolerance and fear of freezing, planting in poor drainage or rainy areas, poor growth environment, easy to cause root rot.

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