Points out the importance of electromagnetic compatibility (EMC) to a country such as Switzerland where a very high proportion of the population is engaged in industry and services, and that the need for precautions against EMP, given its possible continent-wide effects, is obvious. Gives a general review of research projects being carried out in Switzerland, concerned with the production, measurement and simulation of impulsive EM interference, and with the hardening of devices, communications circuits and electric and electronics installations generally