Re: JavaTC and Coil Design

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: G <bog-at-cinci.rr-dot-com> 

Bart, et al,

Thanks for the quick reply. I just became concerned because using the 
recommended wire size appeared to require somewhat less than 1000 turns to 
maintain a 5:1 winding ratio. Thanks for the clarification.

Gregory

>Original poster: Bart Anderson <classi6-at-classictesla-dot-com>
>Hi Gregory,
>
>The recommended wire size is simply a calc based on the 6 skin depth 
>approximation, and if the bare wire diameter remains unchanged, then 
>you'll see this figure change from run to run as the frequency changes 
>with turns. It's not a critical value to be too concerned with. Should you 
>be off by several gauges, then the secondary losses will be higher, but 
>only if the wire is much thinner than recommended. It's just a 
>recommendation, sort of like a derating to ensure RF losses are minimized, 
>and in the overall scheme of things, secondary losses are small in 
>comparison to other areas of the system, so it's not a big concern.
>
>For the normal frequency range of TC's, just stay within 3 or 4 awg sizes.
>
>Take care,
>Bart

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