See also: Steinmetz

The losses by hysteresis in a Magnetic circuit can be approximated by the following formula ( formula of Steinmetz ):

K * V * F * B_m^n (in W)

with:

• K a constant without unit, equalizes with 0,02

• V the volume of the magnetic circuit (in m ³)
• F the frequency of the magnetic field (in Hz)
• B_m maximum magnetic induction in the magnetic circuit (in T)
• N value of the power ranging between 1,6 and 2