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The function of the power adapter is to change the voltage. In the process of voltage transformation, a part of the electric energy needs to be consumed due to the loss. After the electric energy is converted into heat energy, a part of the heat energy is distributed to the surrounding environment through radiation, convection and conduction, and the other part is absorbed by itself, so that the temperature of the power adapter increases.
The law of heat resistance of the flange material indicates that the rise of the temperature in the equipment to a certain temperature will lead to the rapid aging of the flange material, shorten the test life of the product, and reduce the safety performance. Therefore, the temperature of the power adapter during normal operation can only be controlled within the appropriate range to ensure its safe and normal operation.
Power adapter under normal working conditions of high temperature is a common topic, as the world's leading IT supplier compaq computer company, apple computer has been published in the global scope, laptop ac adapter may be in part due to work when the temperature is too high, easy to cause fire danger, active recovery in the global and replace the power adapter.
In the monitoring and sampling inspection, if it is found that some products under normal working conditions, the printed circuit board and transformer winding temperature rise is too high, there is a greater security risk, should be timely troubleshooting. As consumers, in use should pay close attention to the temperature rise in the product, test the product in the most simple way is to use the rise of temperature of the shell, shell temperature of the power adapter and surroundings temperature difference should not exceed 60 ℃, even in the hot summer, the environment temperature reaches 35 ℃, the temperature of the shell may have more than 95 ℃, if discover the rise of temperature of the product we should stop using in time.
Best regards,
Shirley Liang
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