Ferrite cores are homogeneous
ceramic structures and are very dense. They consist of iron oxide mixed with oxides or carbonates of one or more metals such as zinc, manganese, nickel or magnesium. After pressing they are fired in a kiln to meet various operational requirements. The ferrite cores are available in different shapes and sizes. These cores have high resistivity so that it's eddy-current loss at high frequency is much less than that of metallic magnetic materials.
Ferrite Toroid Cores
Ferrite toroid cores are known for their high magnetic efficiency because there is no air gap and the cross-sectional area is uniform. They are available in different sizes and materials. To increase the winding ease, different coatings are also applied. This also improves the voltage breakdown. These magnets are easy to installed, consistent and uniform.
Ferrite Pot Cores
The ferrite pot core is designed to meet the specific requirements of the inductor. Pot cores are self shielding, compact etc. It can be designed in different ways to serve different purposes.
Ferrite cores find their applications in the following fields:
Consumer's electronics such as TV, VTR and audio sets