High Flux Cores

High flux iron nickel magnetic core is a kind of magnetic particle core containing 50% nickel and 50% iron with distributed air gap. HF iron nickel powder core has a saturation magnetic flux density of 13000 Gauss, and its loss value is much lower than that of pure iron powder core. It is an ideal choice for switching power modulation inductors, line noise filters, pulse transformers and flyback transformers. Especially in the case of large DC current, the use of HF magnetic powder core can effectively reduce the size of inductor, thereby reducing the total cost.

Products Details

High flux cores are designed to operate up to about 6500 gauss, as opposed to the 3500 gauss limit of standard MP (Mollypermalloy) cores. There is some sacrifice in stability because less distributed air gap is required to obtain the reduced permeabilities. Core losses are also higher than MP, although because of their high flux and power-handling capabilities, HF cores are used as energy storage inductors and in line output (flyback) transformers in SMPS. They are also especially well suited for DC and line frequency noise filter inductors (such as the differential-mode choke in a switched mode power supply). Their high saturation flux density can be used to advantage because core loss is negligible at the low frequencies of these applications.High Flux cores offer one of the highest biasing capabilities of all powder core materials. The high saturation flux density (15,000 gausses) and relatively low losses make High Flux cores quite useful for applications involving high power, high DC bias, or high AC bias at high power frequencies such as switching regulator inductors, in-line noise filters, flyback transformers, power factor correction (PFC), and pulse transformers. Main Features: Excellent DC-bias Characteristics High Saturation Flux Density (15,000 Gauss) Low Core Losses Advantages of high flux: Temperature stable. High energy storage per unit volume. Available graded into small increments of permeability range. Higher Bmax than MPP cores. Permeabilities available up to 160 compared to 100 for Iron Powder. Things to consider about high flux: Higher core losses than MPP. Manufacturing costs are relatively high, making Hi-Flux cores second only to. MPP cores in cost terms. The available shape is limited to toroidal only, due to very high pressing pressures required. Applications: Energy storage inductors used in switch-mode power supplies. DC and line frequency noise filter inductors. Power factor correction (PFC) circuits. Unidirectional drive applications such as line output (flyback) transformers and pulse transformers. Craftsmanship Sendust core are formed by adding a certain amount of glass forming agent to the molten metal, and rapidly quenching and casting using a narrow ceramic nozzle under high temperature melting conditions. Amorphous alloys have the similar characteristics of glass structure, which not only make them have excellent mechanical properties, physical properties and chemical properties, but more importantly, the new technology of producing amorphous alloys using this rapid quenching method is less than the cold-rolled silicon steel sheet process. 6 to 8 processes can save energy consumption by 60% to 80%, which is an energy-saving, time-saving and efficient metallurgical method. Moreover, the amorphous alloy has low coercivity and high magnetic permeability, and its core loss is significantly lower than that of oriented cold-rolled silicon steel sheet, and its no-load loss can be reduced by about 75%. Therefore, the use of amorphous alloys instead of silicon steel sheets to manufacture transformer cores is one of the main means to save energy and reduce consumption in today's power grid equipment.

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