[Ed_Dinning]

Yes we are somewhat spoilt for suppliers in Europe.

Mag curve is simply a plot of volts/ amps taken usually on the transformer primary with all other windings unloaded. It is then easily seen where the curve starts ti ben and saturation is starting to occur

Commercial winders usually run Stalloy cores at 1T; Unisil (GO) ones up to 1.5T.
GO usually has a smoother transition into saturation.

I did do a transformer design foe a Mil TRU where we used Supermendur alloy run at 2T and 400Hz. It was mounted on a wing spar and in the airstream, so cooling was not a problem. It squealed like a pig due to magnetostriction, but next to a jet engine it was no prublem.

Ed