Re: good results with new coil
From: Peter Electric[SMTP:elekessy-at-macquarie.matra-dot-com.au]
Reply To: elekessy-at-macquarie.matra-dot-com.au
Sent: Saturday, August 02, 1997 4:30 AM
To: Tesla List
Subject: Re: good results with new coil
Tesla List wrote:
> From: Jason Judd[SMTP:jason.judd-at-anu.edu.au]
> Sent: Thursday, July 31, 1997 7:27 PM
> To: Tesla List
> Subject: good results with new coil
> Hi All,
> Last night I fired up my new coil for its first run. After I sorted out
> coupling ,tuning ,gap and capacitor problems I got 18" inches. I can
> still widen the gap further (I don't want to blow up my neon as I don't
> have a safe-T gap yet) and I was only running a 6" top load because I
> don't have enough copper in the primary to tune a bigger one yet. The
> sparks are fairly thin and purple, but Quite energetic.
> Here are the specs.
> secondary : 6" X 21.5" .56MM (23 gauge) wound on PVC pipe
> Primary : .0128 uF (rolled 1MM poly and oilfilled) 13turns
> 1/4" copper tube
> Transformer : 10Kv-at-30Ma neon
> Gap : dual static set at 6MM
> I plan to step up to 15KV-at-60 Ma this weekend after I sort out the top
> load spark /saftey gap problems
18" is pretty good from a 10Kv 30Ma. Sounds like your coil is a good
Be a bit carefull putting 15Kv across your 1mm Cap. Richard Quick and
co. recommend around 2mm for this voltage.
Also try a bit of compressed air on your gap, even if its just a muffin
fan or even better, an old vacuum cleaner motor. They have stacks of
them at the revolve and it did wonders for my coil.