Secondary coil?

From:  D.C. Cox [SMTP:DR.RESONANCE-at-next-wave-dot-net]
Sent:  Sunday, April 12, 1998 10:58 AM
To:  Tesla List
Subject:  Re: Secondary coil?

to: Mel & Chris

The wire choice really depends on how you are driving it -- with a small
neon, large neon, or potential/pole xmfr.  A typical NST unit with a .01
MFD cap will usually work better with 24 or 26 AWG.  If you or running a
pole unit then you should really be running a 16-24 inch dia. sec. coil
size as a minimum because you can use a larger gauge wire #12-#16 AWG and a
large cap such as .04-.05 MFD to match the load.  Another consideration is
of course overall cost with large caps and large secondary toroids required
for an efficient match.  Have fun with your design.


> From: Tesla List <tesla-at-pupman-dot-com>
> To: 'Tesla List' <tesla-at-pupman-dot-com>
> Subject: Secondary coil?
> Date: Saturday, April 11, 1998 7:35 PM
> ----------
> From:  mel wise [SMTP:mwise-at-ns.sosis-dot-com]
> Sent:  Saturday, April 11, 1998 11:37 AM
> To:  tesla-at-pupman-dot-com
> Subject:  Secondary coil?
> I have been reading a lot of posts on secondary inductance and primary
> inductance. I have came to the conclusion that most agree that you should
> try to get the highest inductance and still keep the total turns below a 
> 1000. One thing isn't clear though, should overall capacitance of the
> secondary be kept to a minimum. For example you can wind a    
> w/22awg allowing 14.50mH and 9.85pf at 405khz or you can wind a 4.25"x17"
> w/24awg allowing 14.50mH and 7.54pf at 493khz. Assuming this gives us
> 2.31pf difference and a 88khz difference. Which one should out perform
> other? Or will they perform the same? I personally have not tried this
> to see which or if either would out perform the other.
> So if anyone knows the outcome of this one, I would appreciate the
> Thanks,
> Chris