Re: AC Resistance of wires - was 8 kHz Tesla Coil

["Tesla list" <tesla@xxxxxxxxxx>]

Original poster: boris petkovic <petkovic7@xxxxxxxxx>

Hi Bart,
-----
>My comment was aimed relative to
> the predictions
> mentioned. I expect Gerry's measurements to be far
> below the
> predictions. Doesn't mean the predictions are wrong
> as losses
> elsewhere cannot be easily separated (the age old
> problem). But as we
> tackle one loss at a time, eventually we will be
> able to break them
> all down, well, if were persistent.
------
IMHO,the best and probably the "only" way we can
separate the losses and distinguish which is which,
would be some combination of coil Q msms and accurate
enough simulation of losses due to overall H-field
(corresponding current joule heating losses )
presence.

That means engaging adequate software and hardware for
big numbers crunching to model the thing:).

Hence,my proposal of using relatively large
counterpoise ,at least as long as we are interested in
exploring the highest Q coils operated
outdoors,against the ground  plane.
Once the computer simulation data are obtained ,we
should be able to extract from Q msms in-situ,how much
goes to dielectric losses.

Of course ,there are also other ,purely
experimental,approaches.
Say to build somehow formless/naked  secondary and
compare it with the identical one wound on form and
having wire insulation.
Not an easy task for my money.Crazy idea isn't it?

Take care,
Boris



		
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