Re: [TCML] Toroid thickness effects

[bartb <bartb@xxxxxxxxxxxxxxxx>]

Mddeming@xxxxxxx wrote:
> Unfortunately, there isn't a quick & dirty calculation of hold-off  voltage 
> vs D & d, although I'll bet someone on the list probably has done  it. 
>  
> Hope this helps
> Matt D
Probably not anything quick and dirty. It's one thing to have 2 known 
objects, but with a top load versus the air around it, only one is known 
and the other surface is always changing (the space around the toroid, 
conductivity, ionization, charged particles). I set out at one point to 
attempt such a feat (failed). There's no doubt that the radius of 
curvature affects breakout voltage, but that's about all you can say. 
Once breakdown occurs, sparklengths and performance are more about power 
and the momentary stored energy in the resonator as a whole. Larger top 
loads allow more stored energy, but it also should be small enough to 
allow breakout (or use a breakout point).

Take care,
Bart
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