Cause of power adapter heating
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Update time : 2023-05-12 09:42:02
Generally speaking, the surface temperature rise of the power adapter will be controlled within 30-35℃. As we all know, the power adapter is used indoors, so the indoor temperature in general will not exceed 40 degrees Celsius, the normal is about 25 degrees Celsius. Even if the maximum 40℃, the power adapter housing temperature is within 75℃. The temperature resistance of the shell is about 100℃, and the temperature resistance of the nameplate sticker is about 80℃. So 75 degrees is pretty much the limit. In fact, as long as the temperature of the power adapter is within the design range, that is to say, the temperature is within the normal range, there is generally no danger!
Power adapter heating occurs when the adapter is overworked or has inadequate ventilation. The most common cause of power adapter heating is because of overloading. This happens when the adapter is used to power a device that draws more power than the adapter is designed to handle. For example, if the adapter is rated for 5 amps and you plug in a device that draws 7 amps, the adapter will be overloaded and will start to heat up.
Another common cause of power adapter heating is inadequate ventilation. If the adapter is enclosed in a tight space, such as a cabinet, the heat generated by the adapter will not be able to escape, causing it to overheat. In this case, it is important to make sure that the adapter is placed in a well-ventilated area to ensure adequate airflow.
Solution
1, Select low pressure drop, low loss of switch components, heat dissipation area should be as large as possible, more than 100W switching power supply should generally have metal punched shell, or plus heat dissipation fan.
2, as far as possible to put the power adapter in a good place for ventilation and heat dissipation, do not put books and other things on the power supply.
3. When using the notebook in a high temperature environment, the notebook power adapter should be placed in a place that is not exposed to direct sunlight and ventilated; Do not put the power adapter near the heat outlet of the notebook, otherwise not only the power adapter heat will not escape, but also absorb some of the heat.
Power adapter heating occurs when the adapter is overworked or has inadequate ventilation. The most common cause of power adapter heating is because of overloading. This happens when the adapter is used to power a device that draws more power than the adapter is designed to handle. For example, if the adapter is rated for 5 amps and you plug in a device that draws 7 amps, the adapter will be overloaded and will start to heat up.
Another common cause of power adapter heating is inadequate ventilation. If the adapter is enclosed in a tight space, such as a cabinet, the heat generated by the adapter will not be able to escape, causing it to overheat. In this case, it is important to make sure that the adapter is placed in a well-ventilated area to ensure adequate airflow.
Solution
1, Select low pressure drop, low loss of switch components, heat dissipation area should be as large as possible, more than 100W switching power supply should generally have metal punched shell, or plus heat dissipation fan.
2, as far as possible to put the power adapter in a good place for ventilation and heat dissipation, do not put books and other things on the power supply.
3. When using the notebook in a high temperature environment, the notebook power adapter should be placed in a place that is not exposed to direct sunlight and ventilated; Do not put the power adapter near the heat outlet of the notebook, otherwise not only the power adapter heat will not escape, but also absorb some of the heat.
