Numerical values of MnZn ferrite nonlinear susceptibilities in a lossless approximation

On the basis of expressions for nonlinear magnetic susceptibilities of soft ferrites obtained earlier the analysis of phase shifts between components of flux density on different frequencies and the magnetic field strength is carried out. Only the largest nonlinear susceptibilities those of third and fifth order are considered. It is shown that in the frequency range where losses are small and can be neglected the susceptibility of third order is negative but that of fifth order is positive. These statements allow explaining the shape of output voltage of toroidal transformer with soft ferrite core induced by strong harmonic field strength in the input. Numerical values of nonlinear susceptibilities of third and fifth order as well as that of the first order are determined on the basis of theoretically calculated and experimentally measured harmonics of output voltage of transformer.