Re: Reducing Self Resonance In Rolled Caps
Date forwarded: Tue, 15 Feb 2000 12:43:59 -0700
Date sent: Tue, 15 Feb 2000 11:50:17 -0700
Subject: Reducing Self Resonance In Rolled Caps
Forwarded by: tesla-at-pupman-dot-com
From: Tesla List <tesla-at-pupman-dot-com>
> 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?
> Many Thanks,
> Bill Parn
That's exactly the way I'am gone make my new cap's. I'am very
confident about this approach. The current will (if cap is connected
well) flow from both directions into the cap and will be almost
immediate on the right spot, so the inductance will be defined by
the lenght of the cap not by the length of te foil! I have a large
amount of ldpe of 0.125 mm (5 mil) and I will put the rolls into PVC
pipes and close them with massive metal discs with a screw-hole
in the middle of it (I need still to determine where to get these
complete and ready). I hope I do not have to use oil, by connecting
Met vriendelijke groet,
Ruud de Graaf
Oce Nederland B.V.