How to solve the heating problem of the power adapter

The power adapter is a commonly used power conversion device, and its safety performance is directly related to the personal safety of the user. The following is a brief introduction of the power adapter manufacturer‘s common quality problems and solutions.

The fever under normal working conditions does not meet the requirements

The role of the power adapter is to convert the voltage. Due to the loss during the voltage conversion process, a part of the electrical energy needs to be consumed. After the electrical energy is converted into thermal energy, some of the thermal energy is radiated to the surrounding environment through radiation, convection and conduction. Absorption causes the temperature of the power adapter to rise. The rule of heat resistance of insulating materials shows that increasing the internal temperature of the equipment to a certain temperature will cause rapid aging of the insulating materials, shorten the test life of the product, and cause a reduction in safety performance. Therefore, only when the temperature of the power adapter is controlled within a proper range during normal work can it be guaranteed to work safely and normally.

The high temperature rise of the power adapter under normal working conditions is a common problem. As the world’s leading supplier, Apple Computer has announced globally that some laptop power adapters may be easily operated due to excessively high temperatures during operation. Causes fire hazard. Proactively recycle and replace power adapters worldwide.

After investigation, it was found that under normal working conditions, the temperature of printed circuit boards and transformer windings in the products was too high, and there was a large potential safety hazard. As a consumer, you should pay close attention to the temperature rise of the product during use. The simplest and easiest way is to test the temperature rise of the product shell during use. The difference between the temperature of the power adapter’s shell and the ambient temperature cannot exceed 60 ° C, even in hot In summer, the ambient temperature reaches 35 ° C, and the temperature of the shell cannot exceed 95 ° C. If the temperature rise of the product is found to be too high, we should stop using it in time.