source:Industry News Popular:adapter release time:2021-03-12 09:02:04 Article author:sznbone
Is the power adapter a transformer? I believe everyone is relatively unfamiliar with this question, and many people might think it might be! It may be different from what you think. Today, Xindejia power adapter manufacturer will take everyone to understand!
What is a power adapter
Power adapter is a small portable electronic equipment and power conversion equipment for electronic equipment. It is generally composed of shells, transformers, inductors, capacitors, control integrated circuits, printed circuit boards and other components. It works by converting AC input to DC output. According to the connection method, it can be divided into wall type and desktop type. It is widely used in security cameras, set-top boxes, routers, light poles, massage equipment and other equipment.
How is it different from a transformer
First of all, the nominal voltage of a general power supply refers to the open-circuit output voltage, that is, the voltage when no load is connected to the outside and there is no current output. Therefore, it can also be understood that this voltage is the upper limit of the output voltage of the power supply.
For the case of using active voltage regulator components in the power supply, even if the power supply voltage fluctuates, its output is constant. 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 cannot be 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.
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