loudspeaker coil inductance, loudspeaker magnetic simulation, loudspeaker magnetic core
Permanent magnet coercive force Hc = 500 kA/m
Coil current i = 0.1 A
Magnetic permeability of core - B-H curve:
Calculate the loudspeaker coil inductance with respect to core saturation.
Magnetic state of the core affects the inductance value. The problem is solved in two steps. First the magnetic field of the permanent magnet is simulated and the core permeability (magnetic state) is calculated. The magnetic state is then imported in the second problem. In the second problem the magnetic field of the coil is simulated and the inductance is calculated.
Core saturation caused by permanent magnet. Coil inductance L = 1.5 mH.