Comparative assessment of maxwell and Helmholtz coils magnetic field for biotechnological applications

The studies regarding magnetic field (MF) biotechnological applications in the range of Extremely Low Frequency (ELF: 3Hz to 300Hz, ITU Recommendation V.431-7) were generally based on Helmholtz coils (HC) systems in order to obtain a constant intensity for a determined volume. The paper presents the comparative studies of HC and Maxwell coils (MC) consisting in modelling, simulations and measurements of MF intensity. For this the geometry of the external coils of the MC system was designed identically with HC type. Based on the obtained results, there are defined the internal field intensity distribution for both coils systems used to design biotechnological applications.