source:power adapter Popular:adapter release time:2021-07-16 13:45:27 Article author:sznbone
The circuit in the power adapter is intricate and complicated, among which the electronic components, circuit structure, basic working principle, etc. are the most basic knowledge. Do you know the tips for power adapter detection?
1. Buy a brand-name genuine adapter and hold it with your hands. Generally, a good adapter will be heavier because there are more protection circuits.
2. Check whether the power adapter is in good contact by gently shaking the power connector or battery, if not, try to reinstall the power adapter. The possible problem is that the power connector is deformed.
Three, static observation.
Observe the distribution of components in the circuit, identify the characteristic components, and determine the key inspection points for maintenance through observation. Sometimes, some obvious damaged components can be found for the faulty power supply, which lays a solid foundation for repairing as soon as possible.
Fourth, measure resistance.
For the circuit connection method that is not easy to see clearly, the resistance measurement method is used to clarify the connection, direction and then the circuit structure, and at the same time grasp the resistance value of some key points to provide reference data for future maintenance.
5. Measure the voltage.
Under the condition of power-on, measure the voltage of some key points and grasp the first-hand information of maintenance. The method of voltage measurement is: DC voltage range for pointer multimeter (select which range to use according to the specific object value) black test pen Ground, connect the red test lead to the test point. The digital multimeter uses the DC voltage file, the black mark is grounded, and the red meter is connected to the test point.
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