Laptop power adapter selection method

       The popularity of laptops has brought great convenience to people. However, new troubles have come one after another. What should I do if the notebook power adapter is lost or broken? Some people say that it is not OK to buy an original one? The original notebook power adapter of the same model can certainly be used, but in many cases can not buy the original notebook power adapter, and the original notebook power adapter price is very high, how to do it? How to choose a laptop power adapter?

In fact, for the notebook power adapter, if the working parameters and output connectors are the same as the original ones, then the different brands can be used universally, and the working parameters are not strictly the same, and there is a certain allowable range of variation. This article describes how to choose a notebook power adapter.

Laptop power adapter selection method

1. Clearly use:

For laptops and laptops used in homes and offices, you can buy a home (AC), a laptop power adapter for a car, buy a car, and use the car on the basis of the car. It is ok to have an airplane head. At home, in the car, in the plane, I want to take care of it, buy a two-in-one, or three-in-one. However, if you don't want multiple weights in your computer bag, you can put one at home, one on the car, one in the office, so you don't have to bring it, plug it in, it's more convenient, you can also use it for people around you. .

2. Choose a good brand:

The principle is to choose the same type of brand, if not, then you can only find other brands. Nowadays, many laptop power adapters sold online are unqualified products for cutting corners. Normal use should be no problem. Once an accident occurs, your laptop will be burned, and dozens of notebooks that have been burned out and burned thousands of pieces will not be worth the candle. (Stolen work, common practice has chaotic power, such as the actual only 19V3.42A, but the standard 19V4.74A, this will lead to very slow charging, and even damage the battery and laptop. Also remove some protection, this is more horrible, appear The accident will burn the laptop.)

I suggest you have ample money, you can buy a professional brand of notebook power adapter (that is, the professional only for the brand of laptop charger, not what the power supply does, such a professional brand-name product is not It will cause damage to the battery and laptop, and the protection circuit is advanced.) For example, Icharger, Acharger (ATUU brand), etc. (though these brands are mainly sold in Europe and America, domestic retail is rarely found). Domestic famous brands such as Sterk and Ruirui.

3, clear voltage, current and interface

Look at the brand of the original laptop, the number of V on the label behind the original charger, how many A (generally written behind OUTPUT), the connector of the charger is about round or square, or porous, Do your own mind, there will be a few, so as not to buy the wrong, or even be fooled.

The output voltage of the adapter is preferably equal to the voltage required by the notebook. If it is different, it is as close as possible to the required voltage of the notebook, and the control is within ±5% error. This is because the voltage regulator circuit in the notebook generally has a margin design. When the input voltage changes within a certain range, it can work normally and stably; beyond this range, the voltage is too low, the computer may not work stably or even light the machine; if the voltage is too high, the voltage regulator circuit inside the computer may be burned. Such as an Acer notebook, it requires 15V, 3.36A input, but with IBM 16V, 3.36A adapter can be used with it.

The maximum output current of the adapter is as close as possible to the maximum current required by the notebook. If it is different, it must be equal to or greater than the current required by the notebook. Note: As long as the current is large, you don’t have to worry about it, no matter how big it is. Fear, don't worry about burning the machine! But the current can't be too small, because unstable conditions such as screen flicker may occur. For example, the IBM T30 adapter (16V, 4.5A), although safely used on the IBM ThinkPad T20 (16V, 3.36A), can also be used on the ThinkPad X31 (16V, 3.5A); the principle is: the power adapter is based on the load The situation to adjust the output current is not static. Like the IBM 16V, 4.5A adapter above, it can provide up to 4.5A of operating current, but on the T20, it also outputs a maximum of 3.36A. In fact, due to the different working conditions of the notebook computer, the current required by it is constantly changing. The adapter adjusts the output power at any time according to the working condition of the notebook to meet the needs of the computer. The adapter with a larger output current is more convenient, and it tastes like "killing a chicken with a knife." But if the reverse is not good, although the T20's adapter can also light up the T30, the T30's screen sometimes flickers because the T20's adapter does not provide the required operating current for the T30.

At present, the power of most mainstream notebook power adapters is set at 65W, but it should be noted that the power supply voltage output and current output are not the same. Although the author uses a compatible power supply as a reference, the value is not inferior to the original power adapter, so it has the same reference value. In the mainstream notebook power adapter, DELL's HPOQ065B83 has a voltage output of 19.5V and a current of 3.34A. The ACER-compatible PA-1600-02 produced by Lite-On has a voltage output of 19V and a current of 4.74A.