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Re: primary coil material / design

Original poster: FutureT@xxxxxxx In a message dated 10/7/06 11:59:53 PM Eastern Daylight Time, tesla@xxxxxxxxxx writes: 


for a 4" diameter coil powered by 12kv 30mA transformer   will 1/4
inch copper tubing be ok? someone said something about 1/8 inch but
that seems to small.




1/8" tubing is similar to the 10awg wire that I used and will work
similarly.  In other words it's OK to use for that power level.

John



On 10/6/06, Tesla list <<mailto:tesla@xxxxxxxxxx>tesla@xxxxxxxxxx> wrote:
Original poster: <mailto:FutureT@xxxxxxx>FutureT@xxxxxxx

In a message dated 10/5/06 11:41:08 PM Eastern Daylight Time,
<mailto:tesla@xxxxxxxxxx>tesla@xxxxxxxxxx writes:

John,

My TT-42 coil, and my old research coil both used wire rather
than copper tubing.  The TT-42 uses solid 10awg insulated telephone
ground wire.  The research coil used fine stranded 12awg PVC
insulated wire.  Both were close wound.  Works fine for a small
coil.  Because modern coils usually use a large number of turns
in the secondary, they also need more turns in the primary.
This reduces the peak primary currents and permits a thinner
conductor to be used.
<http://hometown.aol.com/futuret/page3.html>http://hometown.aol.com/futuret/page3.html