---close flux path ---high efficiency ---low magnetic leakage ---low humming ---compact dimensions and light weight A Series toroidal coresCores can be manufactured in material thickness 0.35mm, 0.30mm, 0.27mm, 0.23mm, 0.10mm, 0.08mm and 0.05mm.Bare cores(not varnished), impregnated cores, epoxy coated cores produced according to customers specifications.SB Series toroidal coresSB series toroidal ...