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differences between ferrite and inductor

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rayan

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Hi all,

could you please explain what are the main differences between ferrite and inductor? I assume that their behabiour over frequency is different.
When and why must we use a ferrite instead of a coil?
Thanks for your answers.
 

chek this ref for behaviour of both...
 

Using ferrites for interference suppression......
 

Ferrites are ferromagnetic ceramic materials, compounds of iron, boron and barium or strontium or molybdenum. Ferrites have a high magnetic permeability, which allows them to store stronger magnetic fields than iron, and are known as ceramic magnets. They are the most common ordinary radio magnets. The magnetic field B is about 0.35 tesla and the magnetic field strength H is about 30 to 160 kiloampere turns per meter (400 to 2000 oersteds).
 

Inductors are ussually for procesing AC signal.
Well one application of ferrites are when you must use a signal compund of DC + AC components. If you use a normal inductor there will be saturation high current in the core and losses. Ferrites are a common name for those named by Powersys response and some others matherials are rare earths powdered and mixed with glue so they can't conduct, and in presence of DC current in the coil don't produce current in the core and less losses.
 

When talk about inductor, I always think of how to measure 'various type' of inductor... e.g. iron-core type, ferrite-core type, etc.
 

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