Inductor difference - iron core and air core

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ashugtiwari

Joined: 12 Dec 2008
Posts: 36

21 Jul 2009 11:18 inductor

Hi All,
If I had two inductor of same size with same material of wires, with one having iron core and other having air core, what difference does it make. If used in filter is there change in cut-off freq or is there any change in reactance of inductor

Thanks in advance

Ashutosh

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GetDeviceInfo

Joined: 30 Mar 2009
Posts: 103

21 Jul 2009 15:31 Re: Inductor difference

yes, there will be a difference in inductance, with the cored one having higher inductance.

ashugtiwari

Joined: 12 Dec 2008
Posts: 36

22 Jul 2009 11:18 Re: Inductor difference

Thanks for reply.
Is there any mathmatical equation which determines the amount of change in inductance if known the permiability of the material.

Ashutosh