To Michael Baumann I failed to mention that this "Mylar" cap will be the D.C. filter cap and so will not be used in "pulsed" operation. Sorry for the lack of usable info in my previous post. This T.C. that I'm building is D.C. powered, kind of like Tesla had to work with, except when he made his own power from what he called "Rotary Transformers." The tank caps will be a "can" design. TNX Denis Despins KC6TRW