Do you know the possible reasons why the power adapter cannot be used universally?

Do you know what a power adapter is? What is its function? Nowadays, almost everyone has a smart device, and there are more and more power adapters in people’s homes. Take laptops as an example. Sometimes the laptop is damaged or replaced, and the power adapter becomes useless. Some people choose to throw it away, and some people choose to use it with other devices of the same type. However, in fact, power adapters of the same type are not necessarily universal. This article will discuss three common reasons why laptop power adapters are not universal. Summarize.

1. Different interfaces

Most laptop power adapter brands have different interfaces, which means that other brands of power adapters cannot be plugged into your laptop to provide power. Different interfaces are relatively safe, because at least you will not plug in a power adapter with inconsistent current or voltage to power the laptop, causing damage to the computer hardware.

2. Different voltages

Different brands of laptop power adapters have different voltages. For example, generally IBM is 16V, Dell is 20V, HP is 18.5V, Sony is 19.5V, etc. It can be seen that even if the power adapter interfaces are the same, laptop power adapters of different brands cannot be used for power supply.

3. Different currents

Different brands of laptop power adapters have different currents. For example, generally IBM is 4.5A, Dell is 3.34A, HP is 2.7A, Sony is 4.1A, etc.

In fact, the voltage and current of laptop power adapters of the same brand are not the same. Therefore, even if you use a power adapter between laptops of the same brand, you must confirm the voltage and current specifications.

The interface is very important. If the interface is wrong, various problems will definitely occur. The second is the voltage. As long as the voltage is similar to within 5%, it should be universal. In addition, there is the current. Large currents can be used on machines with small currents, but the time should not be too long. Then there is the issue of interface compatibility. Interchangeability is definitely not possible.

It can be seen that the main reasons why laptop power adapters are not universal are interface, voltage, and current. I believe that after reading this article, you will be able to have a better understanding of the issue of notebook power adapters not being universal. I hope this article can help everyone solve practical problems encountered in life. The above is the relevant analysis of the power adapter, I hope it can help you.