The ferrite core inductors can be operated at high & medium frequencies. The advantages of ferrite core inductors include the following. Out of these two losses in this inductor, the hysteresis loss is the leading one however up to a level of frequency that depends on the core’s performance, beyond which eddy current loss is in the majority. In this type of inductor, the eddy current losses exponentially increase whereas the hysteresis losses linearly increase with the increase in flux & frequency. These inductors mainly depend on frequency levels. They have high-quality factors, minimum stray field, high inductance, and performance over temperature.įerrite core inductors exhibit losses like eddy current and hysteresis. They permit Direct currents but not Alternating currents to flow throughout them at maximum frequencies. They change the energy from electrical form to magnetic & store this converted energy within them. In these types of inductors, the flow of current will generate a magnetic field as well as the variation within the magnetic field will result in the flowing of an opposing current. So these characteristics will make these inductors to use in high-frequency applications. Ferrite core inductors have low eddy current losses, high electrical resistivity, and high permeability. The ferrite core inductor characteristics include the following. This is mainly due to placing a number of wire turns around a loop, and then it focuses the magnetic field into a minor space, wherever it can be more efficient & produce more inductance. If N = 20, L = 375/ = 375/ = 375/25 = 15uH.įrom above we can notice that when N increases then the inductance will be increased. The following formula is used to calculate the inductance (L) value by using the AL value for ‘N’.įor instance: If N is 10, L = 375/ = 375/ = 375/100 = 3.75uH. 
In this example, the number of turns is 30.For instance, if you measured the ‘L’ value in Step-1 as 15 uH, then the equivalent ‘AL’ value will be:ĪL = x 15uH =( 5^2) x 15uH = 25 x 15uh = 375 uH. Next, determine the new number of turns of the inductor. This value is typically calculated when the inductance at a certain number of turns is known. The following example outlines the steps and information needed to calculate the inductance of a ferrite inductor.įirst, determine the AL value.
How to Calculate Inductance of Ferrite Inductor? These inductors have ferrite core that provides them with low electrical conductivity.
What is a Ferrite Inductor?įerrite inductors are a type of inductor known for strong electromagnetic properties. To calculate the inductance of a ferrite inductor, divide 100 by the number of turns, squared this result, then divide the AL value by this result.
N is the number of turns of the ferrite core. AL is the AL value based on the inductance of the ferrite.
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