Before the introduction, it is necessary to clarify the principle of the power adapter, which is not much different from the switching power supply. It is mainly the equipment suitable for adjusting the input and output voltage and filtering impurities. I will also give you a brief function description through the power adapter of the notebook,
First, adjust the input and output voltage. The power adapter of the notebook computer can be used in the voltage range of 100v-240v, that is, no matter where you are, the notebook computer can be plug and play without power converter;
Second, the output voltage is according to the requirements of notebook size and capacitance. Generally, it ranges from several amperes to tens of amperes, but the larger the screen, the more power consumption;
The third is to protect the computer components. If there is no power adapter, the notebook will burn out the original and battery if it is directly inserted into the socket. The main reason is the load and other problems. The power adapter is to control the current within the power load required by the notebook to ensure that it will not bring potential safety hazards due to the power load in the process of normal use;
Fourth, it can protect the battery, shunt and stabilize the input voltage, filter the impurities and clutter in the current, give the battery stable voltage power, and carry down the problems such as the backflow of battery voltage in case of sudden power failure, so as to further ensure the service life of the battery. During use, the power adapter will also send current to the machine and charge the battery by default. After the battery is full, it will send a signal to the adapter through the charging current control device to form a power failure, which is also one of the functions of the power adapter;
Fifth, the power adapter can also help the laptop cool down. It will not cause safety accidents due to sudden power failure or other problems. The current provided for voltage stabilization can also be more convenient for the laptop.
These five functions are realized by the power adapter. If only through the direct input of power supply, the laptop can not be used normally.
