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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>"
> 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
> 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.
> creates a monstrous bolt of energy. Jay did this with a coil he
> built which
> 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
> pressurized gap with Argon and sodium hexifluride gas. This gap is
> quenching. He used carbon ball electrodes. Jay had 12 neon
> a .06 uF 60kv cap that he had built for him.
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