I have added under tutorial a presentation from Dr. Ferch which highlights the benefit and performance gain of Nanoperm material compared to standard Ferrite material. You find the document under the letter N in tutorial. Look for this image
I like to kick of a new testing series where I investigate in more details about this interesting phenomena. I move away from the transformer performance over to the ferrite performance. In this way the winding has only one function and that is to saturate the core and the transistor.