The laptop power adapter is hot. Is it normal? Notebook power adapter is very hot, what should I do?
As long as the sound is not high, do not mind. Notebook power adapter, hot and sound are basically normal, unless the temperature is too high, and even damage to the shell or loud voice is obvious, this is a problem. General does not affect the use of the adapter is broken, buy one on it. Notebooks have protective isolation circuits, and there is no need to worry about damaging notebooks.
At present, the power adapter in the market is made of fireproof and high temperature plastic sealed package, and the heat generated inside is distributed mainly through the plastic shell. Therefore, the surface temperature of the power adapter is still quite high, and the maximum temperature will reach about seventy degrees.
Notebook power adapter in the use of power after burning is normal, there is no need to worry, there is no danger, it will not explode. The length of time doesn't matter. It gets hot when you use one or two, but it stays the same all the time. Besides, the casing of the power adapter of the notebook is high temperature resistant and can not burn out. The power adapter is a transformer, transformer coil inside will produce sizzle in alternating current. Some power adapters use this sound for a long time, but there is no major problem that can continue to be used
The heating of the power adapter is inevitable, but it can speed up the heat dissipation and prevent the temperature from rising continuously.1, select the pressure drop, low loss of switching components, heat dissipation area to be as large as possible, more than 100W of switching power supply should generally have metal drilling shell, or with cooling fan.2, as much as possible to put the power adapter in ventilation, heat better place, do not put books and other things placed on the power supply.3, in a high temperature environment in the use of laptop computers, should be placed on the laptop power adapter does not receive direct sunlight and ventilation place; don't put the power adapter outlet in the vicinity of notebook cooling, otherwise not only power adapter heat does not go out, also should absorb some heat.
Heating of power adapter is normal. The power adapter to the power supply conversion efficiency can only reach about 75-85, in the voltage conversion, a part of energy loss, which in addition to a small part of the loss in the form of wave, mostly emitted by thermal method. The greater the power of the power adapter, the more energy it loses, and the greater the heating capacity of the power supply.
