Good dc saturation characteristics.
Iron powder core permeability.
Examples of the use of powdered iron can be found in rf filters rf amplifiers and if amplifiers.
You can also sometimes find powdered iron in some audio products like an audio inductor in telephones.
Character of iron powder cores.
A magnetic core is a piece of magnetic material with a high magnetic permeability used to confine and guide magnetic fields in electrical electromechanical and magnetic devices such as electromagnets transformers electric motors generators inductors magnetic recording heads and magnetic assemblies it is made of ferromagnetic metal such as iron or ferrimagnetic compounds such as ferrites.
A hydrogen reduced material.
Permeability varies with a magnetic field.
A good magnetic core material must have high permeability.
The carbonyl iron cores are especially noted for their stability over a wide range of temperatures and flux levels.
Pure iron iron 0 45 phosphorus and iron 3 silicon.
Stable and reliable properties effective permeability has excellent frequency property.
For passive magnetic levitation a relative permeability below 1 is needed corresponding to a negative susceptibility.
Used for emi filters and dc chokes.
Has highest permeability of all of the iron powder materials.
Magnetics powder core products kool mu sendust mpp molypermalloy kool mµ max kool mu hƒ edge tm high flux xflux and 75 series materials are distributed air gap cores that are primarily used in power inductor applications specifically in switched mode power supply smps output filters also known as dc inductors.
1 the carbon iron and 2 the hydrogen reduced iron.
The difference depends on the core size permeability core finish thickness wire size and number of turns in addition to the way windings are put on the core.
There are two basic groups of iron powder material.
The chart above shows the permeability of three sintered powder metal soft magnetic materials.
G18 55 385 6 6 green red a good dc saturation characteristics.
Both the iron phosphorus and the iron silicon were produced by adding either an iron phosphorous or iron silicon master alloy.
High saturated magnetic induction strength it may work in large current without saturation.
Ppm oc material density g cm3 color note y8 35 255 6 5 yellow red a good high frequency material it has low core loss and good linearity under high bias conditions.
Silicon iron powder compound.
The charts that are created by manufactures should show the best type of powered iron to use for specific frequency ranges.
Values shown above are approximate and valid only at the magnetic fields shown.
This material has low core loss similar to the 8 material with higher permeability and a lower cost.
Iron powder cores general material properties material reference permeability µo temp.
