Electromagnetic compatibility (abbreviation EMC) refers to the ability of an electronic device or system to function correctly in its electromagnetic environment. The device or system must not introduce any impermissible electromagnetic interference into this environment, which also includes other equipment. The intended operation at the planned place of use under the electromagnetic environmental conditions prevailing there must also be ensured.
When I was a child, electronic devices were a rarity; today, the number is almost unmanageable. At the same time, devices are getting smaller and faster. While there used to be phone booths on almost every corner, smartphones have become an integral part of our everyday lives.
Every electronic device generates an electromagnetic field, which can lead to electromagnetic interference (EMI). This means that we are practically always surrounded by EMI. How this affects a device and other electronic gadgets is where electromagnetic compatibility (EMC) comes into play.
In today's electronic ecosystem, where devices are increasingly interconnected and communication is ubiquitous, EMC ensures that electronic systems can coexist efficiently and without interference. It is therefore about ensuring that one device does not cause unintended failures in other devices and at the same time is not disturbed by other devices. In short, to be electromagnetically compatible, you need to prevent emissions and have a high level of immunity.
Since you cannot see electromagnetic fields, some examples are shown below to make the topic more tangible.
