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What is the principle of electromagnetic shielding material?
Electromagnetic shielding devices are secondary development on the basis of electromagnetic shielding materials. The required materials must have good electrical conductivity. According to the preparation process of materials, electromagnetic shielding materials mainly include three categories: 1) Metals: direct selection Metal materials, such as beryllium copper, stainless steel, etc.; 2) Filling type: Add a certain
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The practical application of iron powder core
Iron powder core is a popular term for magnetic material Fe3O4, which is mainly used to solve electromagnetic compatibility (EMC) problems in electrical circuits. In practical application, different kinds of other substances will be added according to different requirements for filtering in different bands. Electromagnetic compatibility (EMC) refers to the clutter generated by various reasons in the electrical cir
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The Difference Between Ferrite Core And Iron Powder Core
Strictly speaking, metal magnetic powder cores are specialized in manufacturing inductance devices. The differences between metal magnetic powder cores and ferrites are listed below. 1) Metal magnetic powder cores have higher Bs and lower permeability. At the same time, the magnetic bias curve is quasi-linear, and can withstand larger DC bias, because the core is not easy to saturate. 2) The uniform distributio
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Powder Core and Gapped Ferrite Core Comparison
Although high grade ferrite core losses are lower than powder core losses, ferrite often requires low effective permeability to prevent saturation at high current levels. Ferrite, with its high initial permeability, requires a relatively large air gap to get a low effective permeability. This large air gap results in gap loss, a complex problem which is often overlooked when comparing material los
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Powder Core | What are the advantages of distributed air gap materials?
All Magnetics powder core materials are suitable for use in inductors, but different materials have different benefits. For inductors requiring very low losses, molybdenum permalloy should be used because it has the lowest losses. For designs where DC bias is dominant and small size is required, the high flux core with the highest flux should be used. For reasonably low magnetic losses and high saturation at low cost
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