International Standards and Conformity Assessment for all electrical, electronic and related technologies
Electromagnetic Compatibility


Electromagnetic Compatibility


EMC and the IEC

Do you ever stop to wonder why you are asked to turn off mobile phones and electronic games in an aircraft or hospital, where there are other electrical and electronic systems on which many people's lives may depend?

TV screen covered in "snow"


Or is your favourite radio programme interrupted by interference or your TV screen covered in 'snow' when someone uses a vacuum cleaner or electric drill nearby? Most of the older generation will still remember such problems, even if today (thanks in part to IEC International Standards) they have largely been overcome.


Examples like these illustrate what is called electromagnetic compatibility (EMC).


In simple terms, EMC describes the ability of electronic and electrical systems or components to work correctly when they are close together. In practice this means that the electromagnetic disturbances from each item of equipment must be limited and also that each item must have an adequate level of immunity to the disturbances in its environment.


We indicate that there are sources of disturbances to equipment. IF they affect the equipment adversely, we indicate that the disturbances caused interference affecting the equipment's performance.


EMC concerns us all


The aim of EMC is to ensure the reliability and safety of all types of systems wherever they are used and exposed to electromagnetic environments. So EMC development is closely linked with the whole field of electrical and electronic engineering, including the design of these systems.


The subject concerns industry which develops, tests and manufactures equipment and also those who rely on, for example, the omnipresent electronic elements in heart pacemakers, ABS vehicle braking systems, laptop computers or air traffic control systems.


It is therefore only natural that the IEC, with the global coverage of its International Standards and other technical publications, has been deeply involved with EMC for many decades and will continue to be so.