[TCML] Re: Toroids corrugated vs smooth

["Peter Terren" <pterren@xxxxxxxxxxxx>]

I have never used a smooth toroid. It has usually been some cheap plastic 
ducting or chicken wire with pointy breakouts everywhere. At best 
(smoothest) I used conductive tape on a tractor tube. I don't think it makes 
a significant difference provided power is well above what would break out 
at that curvature. I have achieved sparks 3 x secondary length with a spark 
gap coil.
A smooth toroid is essential for avoiding sparks from a low powered coil - 
but who want that?
In fact I suspect my best results have been with a rough toroid and a single 
small breakout point. Certainly easier to photograph lengths of sparks like 
this.
So realistically, is a smooth toroid anything other than cosmetics for a 
reasonably powered coil?

Peter
www.tesladownunder.com 


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