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In Reply to: RE: Mogami paper on Litz cable design posted by coli on June 30, 2015 at 07:42:39
Check out https://en.wikipedia.org/wiki/Litz_wire
Quote:
It consists of many thin wire strands, individually insulated and twisted or woven together, following one of several carefully prescribed patterns often involving several levels (groups of twisted wires are twisted together, etc.). This winding pattern equalizes the proportion of the overall length over which each strand is at the outside of the conductor.
End quote
It's the twisting that really does the trick, but you need the wires to be insulated for it to work properly.
Follow Ups:
What's what the waveguide does, by having no center conductor. All the conductor is on the outside. No insulation is needed.Litz is just a poorly designed waveguide...
Also, I believe Belden Iconoclast has a square conductor design for this reason. They are the few people that actually know what they are doing and can back it up with math.
Edits: 06/30/15 06/30/15 06/30/15
I don't know about 'poorly designed' - they have different uses. For instance, you'd never get a waveguide bendy enough that you can use as wire..you think solid core wires are stiff - try waveguides !
Also, at a physics level, I don't believe that waveguides and properly made litz wire work in the same way. For waveguides, the geometry is critical - the width needs to be same sort of size as the wavelength. And typically they are only useful at very high freqs, like microwave. Litz wire is not frequency-specific and works at much lower freqs; it's operation is based on the magnetic and electric fields generated by AC.
And waveguides are not conductors as such. It makes as much sense to say that waveguides are poorly designed litz wire..as their resistance is too high ;)
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