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Why is the power adapter damaged? What are the main factors?

source:power adapter     Popular:adapter     release time:2021-07-26 08:49:44     Article author:sznbone    

  Why is the power adapter damaged? What are the main factors?

  1. The output voltage is too high

  The problem of excessively high output voltage will occur, which generally comes from the voltage stabilization sampling and voltage stabilization control circuit.

Why is the power adapter damaged? What are the main factors?(图1)

  2, the output voltage is too low

  The switching power supply load is short-circuited, the output voltage end filter capacitor or rectifier diode fails, the performance of the switch tube is degraded, the transformer is bad, and the filter capacitor is bad.

  3, line failure

  The line fault is well understood, that is, the charger wire may be out of power or damaged. This replacement wire can basically solve this problem.

  4. Insurance damage

  Insurance damage is mainly to check the rectifier bridge, diode, etc., and it may also be caused by the influence of the anti-interference circuit.

  Of course, there are other reasons that can also cause damage to the power adapter, such as external force bumps, high temperature, etc., which will not be introduced here.


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