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Do you know the little tricks of power adapter detection?

source:Industry News     Popular:adapter     release time:2022-03-09 10:56:16     Article author:sznbone    

  Do you know the little tricks of power adapter detection?(图1)

  The circuits in the power adapter are intricate, of which electronic components, circuit structure, basic working principles, etc. are the most basic knowledge. Do you know the little tricks of power adapter detection?

  1. Buy an authentic adapter from a famous brand and weigh 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 it is not normal, try to reinstall the power adapter. A possible problem situation is that the power connector is deformed.

  3. Static observation.

  Observe the distribution of components in the circuit, identify the characteristic components, and determine the key detection points during maintenance through observation. Sometimes, some obviously damaged components can be found for the faulty power supply, so as to lay a good foundation for repairing as soon as possible.

  Fourth, measure the resistance.

  For the circuit connections that are not easy to see, use the resistance measurement method to figure out its connection and direction, and then figure out the circuit structure, and at the same time master the ground resistance value of some key points to provide reference data for future maintenance.

  5. Measure the voltage.

  In the case of power-on, measure the voltage of some key points and master the first-hand information of maintenance. The method of voltage measurement is: the pointer multimeter uses the DC voltage gear (which gear is selected according to the specific object value) black test lead Ground, the red test lead is connected to the test point. The digital multimeter uses a DC voltage gear, the black mark is grounded, and the red meter is connected to the test point.

  The above is a little trick for power adapter detection, I hope it can help everyone.


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