source:power adapter Popular:adapter release time:2021-09-15 11:18:06 Article author:sznbone
Common sense of switching power adapter
1. Overview of switching power supply adapter:
Small portable electronic equipment and power supply conversion equipment for electronic appliances.
2, the composition of the switching power adapter:
generally consists of a shell, a switch, a power transformer and a rectifier circuit.
3. Classification of switching power supply adapters:
can be divided into AC output type and DC output type according to its output type; according to the connection method can be divided into wall type and desktop type.
4. Application of switching power adapter:
is widely used in mobile phone handsets, game consoles, language repeaters, walkmans, notebook computers, cellular phones and other equipment.
5, the advantages of switching power adapter:
has the advantages of small appearance, easy to carry, wide range of uses, suitable for various environments, and reliable quality.
6. Maintenance of switching power supply adapter:
A switching power supply adapter is generally composed of a shell, a power transformer and a distillation circuit. There is a nameplate on the power adapter, which will indicate the power that can withstand, input and output voltage and current, etc. The nominal voltage on the power adapter refers to the voltage when no load is connected to the power supply and there is no current, and it is also the maximum voltage that the power supply can output. Understand the composition of the switching power adapter, then once there is a failure, there will be a direction for maintenance.
First of all, you can check whether it is a line fault, whether the power cord is damaged, whether the contact port is oxidized, and whether the input and output lines are energized. If these phenomena occur, replace the power cord to solve the problem. Secondly, the output voltage will be too high or too low. If there is a problem with the voltage stabilization sampling or the voltage stabilization control circuit, it may cause the output voltage to be too high. However, the output voltage will be too low if the load of the switching power supply is short-circuited, the filter capacitor or rectifier diode at the output voltage terminal fails, and the internal resistance of the power supply increases. This situation can be resolved in a targeted manner.
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