Ferrite cores - Guidelines on dimensions and the limits of surface irregularities - Part 6: ETD-cores for use in power supplies (IEC 63093-6:2018); German version EN IEC 63093-6:2018— 27 стр.
Terms and nomenclature for cores made of magnetically soft ferrites - Part 1: Terms used for physical irregularities and reference of dimensions (IEC 51/1276/CD:2019); Text in German and English
Ferrite cores - Guidelines on the limits of surface irregularities - Part 3: ETD-cores, EER-cores, EC-cores and E-cores (IEC 60424-3:2015); German version EN 60424-3:2016— 15 стр.
