Ferrite core is mainly composed of iron , manganese, and zinc three metal elements, commonly referred to as manganese zinc ferrite. Because there is no air gap and the cross-sectional area is the same, the magnetic effect of annular ferrite core is very high. Ferrite core is a kind of high frequency magnetic conductive material, mainly used as high frequency transformer, high frequency magnetic ring, etc., to increase the permeability and improve the quality of inductors. Inductors or transformers can be made by winding a coil on a ferrite core. They are used in instrumentation, communication equipment and household appliances.
