Magnetic Circuits - Equivalent Magnetic Circuits

[robertpearson]

Your "equivalent magnetic circuits" are for small signals only. Large signals will cause the core to saturate. And hysteresis makes the small signals non-linear.

[insoleafptyptd]

Need clarification on the equation you used for resistance. Normally resistance is expressed as R=ρl/A or alternatively R=l/σA where ρ = 1/ σ. Conductivity is the reciprocal of resistivity and is normally represented by the greek letter sigma so is this what you mean't as resistivity is usually indicated by the greek letter rho.

[mustafaimad]

Dear i have equations if the laminated isolated with varnish or paper how. The magnetic field will transfer

[mustafaimad]

Dear Ehsan now we now that magnetic field intensity H is inversely proportional with L (Length) and reluctance proportional with L length, so in the example we see that length for nickel iron is more than two other medium so H for it is less than others, but what about reluctance it should be higher than others medium. is that right?