Attention please: this kind of magnetic ring is not a magnet, it is nonmagnetic. iron can't be adsorption. Highlights: iron power core Contained flux lines Coated with epoxy resin Material Characteristics:  iron powder core is a kind of soft magerntic material which is composed of iron powder and insulating material.After insulating treatment,the iron powder is pressed into required shape and size and goes throuth heating,and coating sometimes.The evenly distributed gap inside the iron powder core is the main feature.Features:The maximum operating temperature of toroidal cores is 150oC.The toroidal cores are coated with epoxy resin with minimum 500V AC breakdown.The toroidal shape provides good magnetic flux coupling and low stray flux leakage,The height of the toroidal shape (also referred as "thickness") is easy to vary and requires no tooling changesApplications:1.This toroids products offer a simple, compact solution for making inductors, coupled inductors and transformers. RF circuits, EC power supply chokes, motors dimmer control filters.-2/-14 MaterialsThe low permeability of these materials will result in lower operating AC fiux density than other materials with no additional gap-loss.The -14 Material is similar to -2 Material with slightly higher permeability.-8 MaterialThe material has low core loss and good linearity under high bias conditions,A good high frequency material.The highest cost material.-18 MaterialsThe material has low core loss similar to the-8Material with higher permeability and a lower cost.Good DC saturation characteristics.-19 MaterialsAn expensive alternate to the -18 Material with the same permeability and somewhat higher core losses.-26MaterialsThe most popular material.It is a cost effective general purpose material that is useful in a wide variety of power conversion and line filter
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