Hi Noah?
Although there are some complex formulas for determining the approximate capacitance for given sized toroids, I think as far as what's the "right size", it is more of an imperical thing to determine what is the optimal torid size for a given coil. A good rule of thumb that seems to work out pretty well for most medium or large sized coil systems is to size your toroid to about the same dimensions as your secondary coil form. Example: if your secondary coil is 6" diameter and 30" tall, then you would size your toroid to just about those same numbers - 6" minor diameter and about 30" in major diameter. For smaller coils, you may tend to run the numbers for your toroid a bit smaller than the dimensions of your secondary coil mainly due to the smaller power supply being unable to fully charge a larger surface area to the point of spark breakout, unless you add a breakout point.
Hope this helps,
David
On Sunday, July 27, 2014 7:41 PM, noahbdanglin <noahbdanglin@xxxxxxxxx> wrote:
Hello,
I have been doing a lot of research concerning what size toroid is best for my system. One thing I cannot find out however is how toroid size relates to the rest of the system. Yes, larger toroids have more capacitance but how do I know how much capacitance my system would best operate with? I am asking for calculations for and basic theory of toroids compared to the rest of the Tesla coil. Any help would be greatly appreciated.
Thanks.
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