The calculators below can be used to determine the proper parameters for either a circular or square cross section Toroid inductor. Credit for the initial Javascript code used in the calculator is given to Ray Allen who has a number of similar useful calculators on his website, Pulsed Power Portal. The MDT software allows application-related parameters to be calculated for all available EPCOS ferrite cores and / or materials. Where N is the number of turns, h is the height of the winding (in cm), r 1 is the inner radius (in cm), and r 2 is the outer radius (in cm). The ferrite core inductor calculator calculates the inductance, L, of an inductor, based on the inductance index, A L, and the number of turns, N, in the inductor, according to the above formula. This Inductance calculator is in three parts, just use the appropriate part of the. Cores with a low length to diameter ratio have a very low effective permeability (µrod) that is nearly indistinguishable between material grades. Alternate Equation for a Square Cross Section Toroid Inductor Remember to click Calculate button to see result of calculation. A few things to keep in mind when using this tool: The length to diameter ratio of the core can significantly impact the ability to differentiate between materials.
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