We live in a world full of various electronic devices, from smartphones, computers to televisions and household appliances, which constantly emit and receive electronic signals. However, when these devices work, they generate electromagnetic fields that may affect the normal operation of other devices. This leads to an important concept that we must pay attention to when designing circuits - electromagnetic compatibility (EMC).

Imagine in an ordinary home environment, your phone is charging while your TV is playing programs. If these two devices do not have good electromagnetic compatibility design, the phone charger may send interference signals to the TV, resulting in distorted images or poor sound quality. That‘s one of the reasons why we need to focus on EMC design.

Let‘s take a look at a specific example. A very popular game console that sells very well in the market. However, many users have found that during the game, when their phone calls, the game suddenly stops working. This is due to the ineffective shielding of mobile phone signal interference caused by the internal circuit design of the game console.

A similar issue also arises with a well-known smartwatch product. In specific situations, when the wearer approaches high-voltage wires or other strong magnetic field environments, the watch will frequently restart or even completely shut down. This issue was ultimately traced back to electromagnetic compatibility issues in its circuit design.

These two examples demonstrate how important electromagnetic compatibility is for the quality and user experience of electronic products. So, as a circuit designer, how can we ensure that our design has good EMC performance?

Firstly, we must fully understand the basic principles of electromagnetic compatibility. Simply put, electromagnetic compatibility involves three key elements: interference sources, transmission paths, and sensitive devices. When designing circuits, we need to identify these three elements and minimize their mutual influence as much as possible.

Secondly, we should choose components with excellent EMC characteristics. For example, the power devices provided by EVVOSEMI are a good choice. EVVOSEMI‘s ESD, MOS, diodes, and transistors have all passed strict electromagnetic compatibility tests, which can effectively resist various electromagnetic interference and ensure the stable operation of the equipment.

Finally, we should also utilize specialized tools and techniques to evaluate and improve our design. This includes using simulation software to predict potential EMC issues and conducting actual electromagnetic compatibility testing to verify whether our design meets relevant standards.

Overall, electromagnetic compatibility is a design consideration that we cannot ignore. Only by fully understanding and mastering this concept can we create high-quality electronic products and provide excellent user experience. Using high-quality component suppliers like EVVOSEMI can help us better achieve this goal. “