RE: Reducing Self Resonance In Rolled Caps
I don't believe that the ESL (equivalent series inductance for the
acronym-challenged) in a tank cap is a real problem in our Tesla Coil
application. There was a thread on this List about a year ago discussing
the issues surrounding off-axis primary inductance. The bottom line was
that off-axis inductance really doesn't compromise performance, it merely
slightly reduces coupling. I believe the same argument applies to a
Nothing can prevent self-resonances. Your primary coil has its own
self-resonant frequency, and so does every piece of wire in your tank
Regards, Gary Lau
Waltham, MA USA
>Original Poster: "William Parn" <parn-at-fgm-dot-com>
>I am still very new and learning, however here goes.
>I have heard a lot about rolling caps, however there also
>appears to be size limitation due to self resonating
>qualities of rolled caps. Can we just roll them using
>extended foil design so as to prevent self resonance?
>What I mean here is to extend the foil out
>the top of one plate and then extend it out the bottom
>of the other plate. Roll it up and then bring all
>the foil at the top together and make a connection
>then do the same at the bottom.
>Has this been tried?
>If yes, What are the results?
>Would this prevent self resonance?