Insulated versus not insulated copper wire

I noticed someone used .0808 copper wire that is not insulated for a project, but I only have insulated, and the parts list does not make a distinction of which one to use...if I use the insulated wire, will that make a difference in the outcome of the project? Thank you!

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D_Hersey over 10 years ago +1

Oh, John, I am fighting a bitter and fitful struggle against ignorance myself. Pardon my tone, I am distracted by extraneous events. Efficiency of your power supply, which you were brave to construct and…
D_Hersey over 10 years ago in reply to jw0752 +1

Note that when you add windings to a core, you are increasing your B over an area, rather than a line. So if your twenty turns yields N quatloos of inductance, putting forty turns upon the same core yields…
D_Hersey over 10 years ago +1

http://www.arrl.org/files/file/Technology/tis/info/pdf/8405015.pdf http://www.fair-rite.com/newfair/index.htm http://www.cwsbytemark.com/

0 D_Hersey over 10 years ago

Now, if you kept to twenty turns, but used two cores instead of one, that would only get you to 2*N quatloos of inductance.
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0 D_Hersey over 10 years ago

When we characterize a magnetic material, we use a complex number. I just was woken up and can't recall the labels for certain, but the first is like the magnetiness. How much it increases the inductance on a coil when inserted instead of air. 'Permeability,' I think. The second term relates to pokiness. If the material is poky, it goes into a fridge magnet rather than a coil. I think the second term is called 'permittivity' or 'loss tangent.'

Magnetic materials conduct. So we have to worry about 'eddy currents.' Line frequency Xformers use laminations of silicon steel to block eddy currents. A ferrite core is made out of some kind of ferritic ceramic, IIRC. Above this, 'powdered iron' is used, which is powdered metal in an epoxy binder.

As they go up in frequency, they have to sacrifice Al for speed, as more of the core is comprised of non-conducting, non-magnetic binder. Same with ferrite, faster mixes imply lower Al.

Al is a measure of permeability in terms of square root of inductance per wire turn, or something.
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0 D_Hersey over 10 years ago

http://www.arrl.org/files/file/Technology/tis/info/pdf/8405015.pdf

http://www.fair-rite.com/newfair/index.htm

http://www.cwsbytemark.com/
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0 jw0752 over 10 years ago in reply to D_Hersey

Thanks for the links.
John
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