Re: Tesla coil grounding and other questions

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

Original poster: JOSEPH CACCIATORE <jocatch-at-us.ibm-dot-com> 


John, checked out your design. Looks really good and easy to build. I have 
one question, however. And it is a generic question too. For a 12kv, 30 ma, 
60 hz NST, the capacitor works out to be .0066uf. Yet you and alot of other 
designs use much bigger caps. How can you still tune? With the program I am 
using for design, changing the cap from .006 to something larger meshes up 
all the parameters making it impossible for me to still use a 4" diameter 
secondary with a 5:1 aspect and still tune it. Maybe I need to play with 
the numbers some more...

I did go to Home Depot and Lowes and I must say I am very disappointed with 
their wire selection. I wanted to get some 10 gauge solid wire to emulate 
what you did and they had none. All I was able to get was 8 gauge bare, 
solid wire. Not a problem really. But no one had any wire smaller than 18 
gauge, no 22, 24, 26, 28, no nothing. So I need to look around the area 
some more. I did pick up a long 12' PVC drainage pipe for about $5. That 
wasn't bad. I also picked up 2 end caps for 94 cents for the pvc so I can 
make a rig to spill it when I do wind the wire on it.

JC




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

02/16/2004 01:54 PM
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Re: Tesla coil grounding and other questions




Original poster: FutureT-at-aol-dot-com

In a message dated 2/15/04 8:29:06 PM Eastern Standard Time,
tesla-at-pupman-dot-com writes:

 >As you may have gathered from my other post I plan to start from scratch
 >and build a 4 or 4.25" secondary coil using my 12kv NST. Looks like I will
 >buy some MMC caps on ebay if I can find them or from the Geek site.


JC,

You may want to check out my TT-42 type coil at my website
which uses a 12/30 NST and a 4.25" dia secondary and gives
42" sparks.   There's a link there to John Morawa's TC which is
prettier than mine I must say, and it uses 1/4" tubing on the primary.

<http://hometown.aol-dot-com/futuret/page3.html>http://hometown.aol-dot-com/futuret/page3.html

John