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Old 11th July 2010, 09:41 PM   #1
thadman is offline thadman  United States
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Default How to calculate inductance of foil

How do you calculate the inductance for a length of aluminum foil? All of the equations I've seen are for coils.

Will inductance vary dramatically with frequency? I'm not sure if the skin effect will play a role.

Thanks,
Thadman
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Old 11th July 2010, 09:44 PM   #2
Glowbug is offline Glowbug  United States
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Find a friend with an LCR meter, proceed to buy said friend beer for his time...
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Old 11th July 2010, 10:02 PM   #3
thadman is offline thadman  United States
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Find a friend with an LCR meter, proceed to buy said friend beer for his time...
theres no way to do it theoretically?
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Old 11th July 2010, 10:30 PM   #4
Ron E is offline Ron E  United States
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what is the application - just a linear conductor?
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Old 11th July 2010, 10:32 PM   #5
thadman is offline thadman  United States
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what is the application - just a linear conductor?
ribbon loudspeaker. I assume the foil is going to form a RL circuit, but I'm not sure how to calculate it.
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Old 11th July 2010, 10:45 PM   #6
Ron E is offline Ron E  United States
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in that application your hookup wire and/or transformer will probably swamp any inductance due to the ribbon.
Inductor - Wikipedia, the free encyclopedia
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Old 11th July 2010, 10:59 PM   #7
thadman is offline thadman  United States
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in that application your hookup wire and/or transformer will probably swamp any inductance due to the ribbon.
Inductor - Wikipedia, the free encyclopedia
Theres still no way to calculate it? I'd like to develop a PSpice model which incorporates all of the elements of the combined circuit (loudspeaker + amplifier), including all parasitic effects.

If I saturate the steel to 2.2 tesla, I believe its permeability approaches that of air and might be assumed a constant.
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Last edited by thadman; 11th July 2010 at 11:04 PM.
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