Re: secondary comparisons

["Barton B. Anderson" <tesla123-at-pacbell-dot-net> (by way of Terry Fritz <twftesla-at-uswest-dot-net>)]

Hi Marc, 

Tesla list wrote: 
>
> Original poster: "Metlicka Marc" <mystuffs-at-orwell-dot-net> 
>
> my thinking is that if i was to 
> wrap a 10" form too 32.4" length, using the same wire (28g) this would 
> give me 378mh inductance. 8mh difference from the 8"-at-40" secondary, also 
> this would give me 37.37khz on the 10", .03hz difference from the 8" 
> coil. all other things being equal between the two. 
> has anyone done a comparison of this? would it be of interest to anyone?

Absolutey it would be of interest! Yes, if you keep inductance close and the Fo
close, then the tank would also stay close. This would be a great test to show
a difference not only of diameter as John has mentioned, but also secondary
turns and/or h/d ratios (5:1 vs 3.2:1). The skin depth should remain close as
well since it's the same wire size and Fo is the same (hmmm., will more turns
add to proximity losses?). Yes, this would be a very good test. 

Keep us update, 
Bart 
>
>   
> i really wanted to show any benefits of double the turns from the norm 
> but, as many have tried to think of a way to do it, with more astute 
> minds then i possess, it seems there is no easy solution. 
> any info on the pro's or con's with this will be greatly appreciated, 
> thank you in advance,   mem