Is there any difference between the power adapter and the transformer:
Is the power adapter a transformer? I believe everyone is not familiar with this problem, and many people may think it is possible! It may be different from what you think.
What is a power adapter:
The power adapter is a small portable electronic device and a power conversion device for electronic devices. It is generally composed of housing, transformer, inductor, capacitor, control integrated circuit, printed circuit board, and other components. Its working principle is to convert AC input into DC output. According to the connection mode, it can be divided into wall plug-in type and desktop type. It is widely used in security cameras, set-top boxes, routers, polished poles, massage equipment, and other equipment.
What is the difference with the transformer:
First of all, the nominal voltage of a general power supply refers to the open-circuit output voltage, that is, the voltage when there is no external load and no current output, so it can be understood that this voltage is the upper limit of the output voltage of the power supply. When an active voltage stabilizing element is used for power supply, its output is constant even if the power supply voltage fluctuates. For a power supply equipped with a small transformer such as a Walkman, the power output will not fluctuate with the fluctuation of the mains voltage.
Generally speaking, the true no-load voltage of an ordinary power adapter may not be exactly the same as the nominal voltage, because the characteristics of the electronic components are not exactly the same, so there is a certain error. The smaller the error, the higher the requirements for the consistency of electronic components, the higher the production cost, and the higher the price.
