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


Electromagnetic Compatibility


Achieving EMC

Once the potential problem areas have been sufficiently identified, EMC can be achieved in a number of ways. For example, the source or the victim equipment may in effect be removed from an area by rule or regulation (e.g., no cellular phones permitted). Alternatively, if some equipment emits more EM fields than intended or desired, there is the possibility of reducing those emissions and therefore the level of disturbance for other equipment occupying the same area.

Since avoidance techniques may not always be successful, however, it may be more effective to mitigate the effect of a disturbance by filtering or shielding, thereby increasing the immunity, or by some degree of redesign that ensures the problem is no longer significant to the exposed equipment.

Whatever the method, the aim always remains the same: to secure the proper functioning of equipment in the role for which it is designed.

Which is where the IEC makes a major contribution. IEC standards and other technical publications, for example, describe all the basic elements of the EMC problem, specify emission measurement methods, set emission limits, detail immunity testing techniques and recommend protection methods either in general or for specific products.


To find out more follow the links in the section on How the IEC helps designers, installers and operators ensure that their electrical and electronic devices, equipment and systems can all reliably function together.