Re: Questions on coil secs

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "Gregory Hunter by way of Terry Fritz <twftesla-at-qwest-dot-net>" <ghunter31014-at-yahoo-dot-com>

For a low-powered coil like you are contemplating I
think the 4.5" pipe is a better choice. The resonant
cap size for a single 12kv/30ma/60Hz NST is 6.6nF
(.0066uF, 6600pF). I've measured the capacitance of a
few 750ml wine bottle and found them to be in the
range of 1200-1700pF each, depending on the bottle. My
first-ever saltwater cap used four 750ml wine bottles
for 6nF. These were clear, uncolored glass with
straight, parallel sides, abrupt shoulders, and short
necks. You can see it at:

http://hot-streamer-dot-com/greg/bottom.htm

4 or 5 wine bottles in parallel should do the trick
for you. The exact capacitance value is not critical,
and capacitance higher or lower than the resonant
value are capable of providing satisfactory
performance.

Regards,

Greg
http://hot-streamer-dot-com/greg

--- Tesla list <tesla-at-pupman-dot-com> wrote:
> Original poster: "jol degroff by way of Terry Fritz
> <twftesla-at-qwest-dot-net>" <joldegraff-at-hotmail-dot-com>
> 
> 
> 	I have been trying to make a low cost coil for
> about a year now and at 
> first used an ignition coil because of the fear of
> getting shocked and 
> killed by an nst but have overcome that fear and
> have moved into the 
> wonderful world of nsts.
> 	Anyway I got a 12000 volt 30ma nst from a local
> sign shop for free (yeah) 
> And have a few questions.  First of all I went to
> home depot to pick up some 
> 12 awg copper solid wire for a primary and happened
> to be in the section 
> with pvc/abs pipe and found a abs pipe that cost $14
> had a diameter of 6" 
> and 24" long. I was wondering if this would make a
> better secondary than my 
> 4.5" X 24" abs pipe if so what awg magnet wire would
> I need how much of it 
> and about how many wine bottle caps would I need
> (just a rough estimate)
> 
>