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Hello everyone, today we're going to learn about laptop adapters

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Laptop adapters are also called chargers

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It's what powers the laptop to work

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It has a high quality switching power board inside it

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Its function is to convert 220V AC input into DC output,

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providing stable low-voltage DC power for laptops

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The output voltage is usually between 12V and 20V

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Different brands of adapters have different output power

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The calculation of output power is to multiply its output voltage by its output current to obtain its output power

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For example, a 65W adapter has an output voltage of 19V and a current of 3.42A

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Some brands of laptops must use the original adapters to work properly

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For example, if you use the wrong Dell adapter, you will not be able to charge

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Using the wrong HP adapter can cause it to not boot properly

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Even some Lenovo models use special adapters

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For example, the Yoga series use a special-shaped interface

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and it must use a special charger

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Well, this is the introduction of the laptop adapter