Power and data lines are working in a high frequency state, resulting in a large number of internal stray space electromagnetic interference signals, and the signal strength is several times outside the chassis to several times. Power supply as a central part of the power supply to the entire platform, if the output current changes due to electromagnetic interference, it may affect the normal operation of the hardware, so good electromagnetic interference preventive measures to enhance the stability of the power supply has a positive effect of.

We can often see the magnetic ring design on the power supply of some precision electronic equipment with high power supply quality. For example, the magnetic ring design with stronger anti-jamming effect is widely used on the common laptop power adapter around us. For some reasons, such as leakage or static electricity, the main voltage difference between the host and the power supply, this voltage difference in the plug-in will have a strong impact current, easy to breakdown components, and the ring can effectively suppress the moment Impact current, so that static electricity is slowly released. With the presence of a magnetic ring, the power output can be more stable. At the same time, the magnetic ring can also suppress cluttered electromagnetic signals and reduce the impact of electromagnetic radiation on human health.