Yea but don't you need more windings if you stabilize a core (which seems to be lowering its mu) to get the same effective inductance.. so why not just use a different material?
does its behavior change in any other way then just for tuning purposes?
i.e. for my stable inductor, is there a difference in using a nickle zinc core vs a gap stabilized zinc manganese core? (Does the air gap core's high frequency behavior change? like it seems to be a intrinsic material property, so if the effective mu of the two inductors are the same due to design difference, the nickle zinc core would still work better at high frequencies? )
seems like there would be no point to airgap a core with a lower permeability because with the enhanced winding requirement you would need more size, so for a filter it seems like it would be better to go with a lower permiability material rather then going for an air gapped core with trimmed permeability, because it would filter higher frequencies better..... any benefits on the other side?