Re: Playing around
Tesla List wrote:
> >From chadwick-at-flash-dot-netMon Jul 15 22:53:21 1996
> Date: Mon, 15 Jul 1996 23:07:08 -0500
> From: "Chad A. Madison" <chadwick-at-flash-dot-net>
> To: tesla-at-pupman-dot-com
> Subject: Playing around
> Well, just for hee hee's and ha ha's I decided to play with a 450 watt coil
> this afternoon. Instead of your standard issue series spark gap, I strapped
> a Jacob's Ladder to it and took the shunt cap off. Output with just the
> ladder was almost exactly the same (at the peak of the ladder) as with the
> .0056uf 40kvdc cap and 6-gap series spark gap.
> Has Chad discovered some profound new way to completely eliminate the need
> for a shunted cap? Try it and see what results you encounter.
> Perhaps, in my somewhat inebriated state (four day vacation started today),
> I bore witness to an illusion. But my brother-in-law was there too, and he
> agreed with me totally.
> \/ \ /
> Chad Alan Madison \ / \
> BSEE Undergraduate Student \ / \ /
> University of Texas at Austin \ / //
> Member: Tesla Coil Society \/ \/
> http://www.flash-dot-net/~chadwick/ || ||
There is nothing striking about your revelation. The jacobs ladder is a
single variable space gap. At the top of the arc in the ladder your
spaceing is at a maximum and this is where best output always occurs in a
system. This is due to the higher voltage allowed to charge the
capacitor. More energy, more spark. Also this is the most damaging
point at which to operate a coil and many neon transformers are taken out
with overwide gap separations.
This form of gap used to be used by old radio amateurs and is called a
"horn gap" It was also used as a safety type gap in early systems due to
its natural tendency to ultimately self extinguish.
Richard Hull, TCBOR