I am considering a tubular example like Finn's recent "Thumper has utilized.
How does the ROC of these toroids relate to the level of charge they can retain? A conventional 8 inch ROC will support "X" amount of charge before breakout, but the tube that is used with these tubular designs has a much, much smaller ROC, 0.5 inch for example.
So does the overall profile curve of a tubular type of toroid act somehow as though it is just a single surface? In other words would the level of charge that a tubular toroid supports be the same as a conventional toroid (overall size for overall size, roughly) Also is the resulting pF capacitance value comparable between both types?
Just a last thought but all of these I have seen are on DRSSTC or other SS stuff, are they just as usable on old style RSG 80 Khz technology or do they prefer a high frequency coil?
Regards
Phil