Ferrites are called chemical compounds of iron oxide with oxides of other metals. The composition of the substance may vary depending on the desired properties of the finished product.

The production of cores

Ferrite cores are produced according to the technology of powder injection. A mixture of powders containing the necessary components in carefully calibrated proportions, pressed into the billet of the necessary form, which is baked at a temperature of up to a thousand degrees. The baking may be performed in air or in special gas atmosphere. At the last stage of manufacture the product of ferrite slowly cools down within a few hours. This technology not only allows to produce alloys with desired characteristics, but also to produce products that do not require further processing

The use of ferrite cores

The most widely ferrite cores are used in electrical and radio engineering. Since ferrite has high magnetopause capacity and low conductivity, it is indispensable for the Assembly of low-power transformers including pulse. Also the ferrite cores are used as the means of passive protection against high frequency electrical interference. This phenomenon is most characteristic of switching networks of control devices, where even a shielded cable may be picking up interference, reducing the efficiency of signal transmission.

Types of ferrite cores

For the winding of transformers release ferrites U-shaped and W-shaped. Rod form ferrite products used in the manufacture of magnetic cores: for example, from ferrite cores perform for coils of high inductance. To the layman, the most frequent ferrite rings and cylinders, which are used as filters noise in the communication cables: USB, HDMI, LAN, and others. Advanced technology allows us to produce very complex structure of the product, the size of which sometimes is less than a tenth of a millimeter.

The advantage of ferrite over similar cores

The low conductivity of the material avoids the formation of eddy currents during the magnetization reversal of the magnetic circuit. For this indicator, the ferrite exceeds even tonkolistovogo electrical steel. Also, the ferrite can be set certain properties at the stage of production, allowing in advance and with high accuracy to adapt the product to fit the needs of the particular device in which the ferrite will be used. Ferrite can actively absorb, dissipate or reflect induced noise in the cable, which is especially important in the construction of high-precision devices: small weight and dimensions of ferrite cores can be used without disrupting the layout of the equipment inside of complex devices or systems.