When we use the power adapter, we may find that the power adapter will heat up during use, especially when we charge in hot summer. In fact, this is a normal phenomenon because it consumes energy in the process of converting voltage, and part of it is converted into heat energy. As we all know, energy conversion will be lost. The conversion efficiency of the existing European and American six level energy efficiency standard power adapter is generally between 70% and 90%. For example, for 12v10a power adapter, the efficiency of level 6 energy efficiency standard is required to be less than or equal to 88%. At present, it is difficult to find a better conversion method for the conversion efficiency of power adapter. In the process of voltage conversion, some energy loss, except a small part in the form of wave, is mostly released in the form of heat.
Of course, it is not ruled out that some inferior power adapters heat due to design defects, or use inferior components, or the circuit is not designed according to safety standards at all, because the temperature rise or other parameters of these products do not meet the requirements of safety standards and are not comparable with the real power supply. Therefore, it is recommended that users choose regular power products. For formal power adapters, we first look at the logos on the nameplate. Some will be marked with certificate number, manufacturer information or factory abbreviation or full name or logo. We need 3C certification to circulate and use in the domestic market. Therefore, we should pay attention to abide by these information in the purchase process to avoid buying inferior Shanzhai products.
In addition to not using inferior power adapters, we should also pay attention to using original power adapters as much as possible. Even if we replace it, we should also select the power adapter with the output voltage corresponding to the product. Assuming that the power adapter of our router is broken and we have used 9v1a power adapter before, we can only replace 9V power adapter, otherwise the router will not be able to use or even burn down. This is about voltage. We should also pay special attention to matching the output current of the power adapter. It must not be less than the original output current, otherwise the power adapter will be overloaded. If it is overloaded, the power supply will heat up, or the protection device does not output, or even damaged.
After paying attention to the above points, we need to consider environmental factors. It's getting hotter and hotter. Even if the temperature of the original power adapter is lower than this temperature, the housing temperature will rise. Therefore, the power adapter should not be placed in a closed environment with direct sunlight or heat during use, but should be placed in a cool and ventilated place. Otherwise, not only the heat of the power adapter cannot be dissipated, but also some heat will be absorbed. In hot summer, we can put the power adapter on the side to increase the contact area between the power adapter and air, so as to better heat dissipation. In order to obtain better heat dissipation effect, we can also insert narrow plastic or metal blocks between the power adapter and the desktop to increase the air convection speed around the adapter and speed up the heat dissipation speed of the adapter. Do not place objects on the power adapter to avoid heat dissipation. If possible, add a fan next to the power adapter to dissipate heat.