source:power adapter Popular:adapter release time:2021-10-12 10:02:38 Article author:sznbone
What is a power adapter?
Power adapter is a power supply conversion device for small portable electronic equipment and electronic appliances. It is generally composed of housing, transformer, inductor, capacitor, control IC, PCB board and other components. Its working principle is converted from AC input to DC Output; According to the connection mode, it can be divided into wall type and desktop type. It is widely used in security cameras, set-top boxes, routers, light bars, massagers and other equipment.
The power adapter is also called an external power supply. It is a power supply voltage conversion device for small portable electronic devices and electronic appliances. It is commonly found in small electronic products such as mobile phones, LCD monitors, and notebook computers.
Precautions for the power adapter
1. 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, so it can also be understood that this voltage is the upper limit of the output voltage of the power supply.
2. In the case that the power supply uses active voltage stabilizing components, even if the mains voltage fluctuates, its output is a constant value, like a general small transformer on the market, such as a power supply such as a walkman, if the mains Fluctuations, the output of the power supply will not fluctuate accordingly.
3. 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 electronic components cannot be completely consistent, so there is a certain error. The smaller the error, the consistency of the electronic components is required. The higher the production cost, the higher the price.
4. Regarding the nominal current value, no matter any power supply has a certain internal resistance, when the power supply outputs current, there will be a voltage drop inside, which leads to two things, one is to generate heat, so the power supply will be hot, and the other One is to cause the output voltage to decrease, which is equivalent to internal consumption.
The introduction to the power adapter is here, if you have any questions, you can contact us and we will answer in detail for you!
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