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Re: Small number of turns in primary

Original poster: "albert hassick by way of Terry Fritz <twftesla-at-qwest-dot-net>" <uncadoc-at-juno-dot-com>

Hi Bob, All.  We placed all our power into a 14ga. winding with a 12"
diameter concrete form secondary and were able to get immensely fat arcs
using a primary coil of only 1 and 1/2 turns.  The output was most
impressive!  We used a large barium titanate cap bank in conjunction with
this coil.  So yes, it can be done.   Al. 

On Wed, 16 May 2001 18:33:19 -0600 "Tesla list" <tesla-at-pupman-dot-com>
> Original poster: "by way of Terry Fritz <twftesla-at-uswest-dot-net>" 
> <fsimms-at-ghg-dot-net>
> One advantage of having a low inductance with a few turns in the 
> primary is 
> that you get to use a larger cap. The larger the cap the more energy 
> you can 
> store in the cap to be discharged into the coil. This would take a 
> very 
> expensive capacitor though.  Finkelstein showed with a .6 coupling 
> that the 
> entire energy of the cap can be put into the coil in 3/4 of a cycle. 
> This 
> creates a monstrous bolt of energy. Jay did this with a coil he 
> built which
> had 
> a 120 turn 3 ft high secondary and a 4 turn primary. His secondary 
> was about a 
> foot in diameter. He generated single shot sparks that were as long 
> as his arm 
> and as thick. He used litz wire on his secondary to get the 
> resistance down.  
> His coil was set up to generate just a single shot. Jay used a 
> static 
> pressurized gap with Argon and sodium hexifluride gas. This gap is 
> self 
> quenching. He used carbon ball electrodes. Jay had 12 neon 
> transformers
> driving 
> a .06 uF 60kv cap that he had built for him.
> Bob
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