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Re: some ?'s about a odd TC setup
Your coil is well out of tune, try running the numbers through Wintesla. I
haven't run your numbers myself, but you certainly need some topload.
Ground the bottom of the secondary. I guess that your second inductor is
acting as a counterpoise.
Steve
----- Original Message -----
From: Tesla List <tesla-at-pupman-dot-com>
To: <tesla-at-pupman-dot-com>
Sent: Sunday, May 28, 2000 7:23 AM
Subject: some ?'s about a odd TC setup
> Original Poster: "Kevin D" <teslacoilfreak1-at-mediaone-dot-net>
>
>
>
> Hello Everyone,
>
> I have a few questions about my current "practice coil",mainly questions
> about my layout.
> My coil uses a 555 circuit to drive a ignition coil,the coil output is
> connected to a bank of 25 1N4007 rectifiers.The spark gap is two caridge
> bolts spaced at about .125"and the tank cap is a MMC type cap(1 strings of
> 10 -at- .056uf/cap).The secondary resonator is 14" long 3" Dia. and wound
with
> 22Awg wire,there is no topload.The primary resonator is 5 turns of 9Awg
wire
> spaced a 3/8" appart in a helix config.
> Now here is the part that I have questions about.I had no where to put a
> ground so I had very poor arcs(1/4" and problems with the sec. arcing to
the
> pri.)So I tried connecting another resonator to the bottom of the sec.
> resonator(16" long/1.5" Dia. w/22Awg wire)This improved the arc output to
> about a inch.
> I then decided to place a coffee can on top of the second resonator and
this
> made the arcs about 1 1/2" long.
> My first question is: why does doing this increase the arc length,my
second
> question is could this be considered a"uneven vertical bipolar coil"(that
is
> realy out of tune)
>
> TIA,
> Kevin Dalpe
>
>
>