UNE-EN IEC 63093-14:2019 Ferrite cores - Guidelines on dimensions and the limits of surface irregularities - Part 14: EFD-cores (Endorsed by Asociación Española de Normalización in August of 2019.)
2019UNE-EN IEC 63093-14:2019 Ferrite cores - Guidelines on dimensions and the limits of surface irregularities - Part 14: EFD-cores (Endorsed by Asociación Española de Normalización in August of 2019.)