How to choose the right power adapter

　　For how to choose the right power adapter, many people have their own methods? Today, Xindejia Electronic Technology Co., Ltd. will take you to understand it!

　　   For the power adapter (Fire Bull), if the working parameters and output connectors are the same as the original ones, then different brands can be used universally, and the working parameters are not strictly the same, and there can be a certain allowable range of variation. The main working parameters of the power adapter:

　　  1. Input voltage and input current;

　　  2. Output current and output current;

　　  3. Output connector (interface) and output polarity (basically different brands have their own standards);

　　   In general, the power adapter is 100-240V input, in line with global international standards.

　　4. For power adapters with higher requirements, not only conventional factors should be considered, such as whether there is excessive high voltage, efficiency, energy consumption, power factors, etc. All need to be considered, such as power adapters for medical use. It is relatively high, which depends on the requirements of the product you use, and the price is also different.

　　  Refer to the following principles when purchasing a power adapter:

　　1. The quality of the power adapter is often related to the power supply scheme selected and the components used, which determines the use effect and life of the power adapter, followed by the workmanship of the power supply, whether the power adapter has a sense of compactness, and the shell. The material and so on all determine the quality of the power adapter. Therefore, when choosing a power supply, be sure to take a sample for testing, so as to know whether the power supply is doing well or not, whether it is suitable for your own products, etc., so as to avoid problems in the future. When choosing a power adapter, you should not only consider the price, but also pay attention to the quality. .

　　2. The output voltage of the adapter is preferably equal to the required voltage. If it is different, it should be as close as possible to the required voltage of the notebook and controlled within ±5% error. This is because the voltage regulator circuit generally has a margin design. When the input voltage varies within a certain range, it can work normally and stably; if 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 in the computer may be burned. Such as an Acer notebook, it requires 15V, 3.36A input, but it can be used with IBM 16V, 3.36A adapter.

　　3. The maximum output current of the adapter should be as consistent as possible with the required maximum current. If it is different, it should be equal to or greater than the required current; Note: The current only needs to be large, and you don’t have to worry about how large it is, no matter how large it is. Afraid, don't worry about burning the machine! But the current should not be too small, because unstable conditions such as screen flickering may occur. Such as IBM T30 adapter (16V, 4.5A), although it can be safely used on IBM ThinkPad T20 (16V, 3.36A), it can also be used on ThinkPad X31 (16V, 3.5A); the principle is: the power adapter is based on the load. It is not static to adjust the output current according to the situation. Like the IBM 16V, 4.5A adapter above, it can provide a maximum working current of 4.5A, but when used on a T20, it also outputs a maximum current of 3.36A.

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