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FeSi Laminated Core
FeSi laminated core, also known as Silicon Steel Laminated Core, is a type of core used in transformers and other electrical devices. It is made by stacking and bonding thin laminations of iron-silicon alloys together.
The laminated core construction consists of multiple layers of thin sheets or laminations that are typically around 0.2 to 0.35 millimeters thick. These laminations are made from a combination of iron and silicon alloys, with silicon content usually ranging from 3% to 4.5%. The laminations are insulated from each other using a thin oxide layer or an insulating coating.
The primary reason for using laminated cores is to minimize eddy current losses, which occur due to circulating currents induced in the core material when it is subjected to a changing magnetic field. By using thin laminations with insulating layers between them, the eddy current paths are interrupted, reducing the energy lost as heat and improving the overall efficiency of the transformer.
The iron-silicon alloys used in FeSi laminated cores are chosen for their magnetic properties. The addition of silicon increases the resistivity of the core material, which helps to further reduce eddy currents. Additionally, silicon improves the magnetic permeability and reduces the core's hysteresis losses.
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