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Pancake Primary (fwd)





---------- Forwarded message ----------
Date: Sat, 14 Feb 1998 18:31:05 -0500 (EST)
From: SBJohnston-at-aol-dot-com
To: tesla-at-pupman-dot-com
Subject: Pancake Primary


Many folks have recommended a flat pancake-style primary coil instead of my
current vertical air solenoid coil.  
I remembered I have a big roll of new 1" copper strap that could be used to
make a nice flat primary, so I guess I should give it a try.  

I wonder how to mount such a coil (Hmmm... maybe an "X" of wooden 1"x1"
strips with slots cut partway thru?) and how far apart to space the turns?

Also... Can anyone help me out with the equation for calculating the
inductance of a flat spiral coil of this sort?  Thanks!

Steve Johnston

sbjohnston-at-aol-dot-com