Simulation of lightning magnetic field

The lightning magnetic field is simulated when a pulse current is injected into the loop from the lightning surge generator. Different waveforms of lightning magnetic field can be simulated by regulating the parameters of the loop according to the relation between the parameters of the loop and the simulated wave. The dot loop is made to measure the magnetic field in the big loop and the results show that the M-field is relative even among a curtain area of the big loop, which is appropriate to test the lightning M-field effect on electromagnetic sensitive devices.