Re: Hockey Puck Caps

["Tesla list" <tesla-at-xxxxxxxxxx>]

Original poster: Terry Fritz <twftesla-at-uswest-dot-net>

Hi

        Be sure the caps you get are rated at ~3 amps RMS.  Some "cheap" ones
are not so good at RF (mostly for DC blocking).  You really need the super good
RF transmitting types that will probably run about $100+ "each" new.  Tesla
coils draw very high current spikes that may degrade these caps over time as
well.  I have used 10 caps in parrallel before with no problem on a 15/60
system.  30 Panasonic caps (4 x 13 for would probably do the same thing at 52 x
1.8 = $93.60 so be careful not to spend too much.

Cheers,

        Terry

At 11:35 PM 12/1/2000 -0500, you wrote: 
>
> Hi All! 
>         Has anyone had experience with hockey-puck type rf capacitors? I 
> looking at 4 of these rated .004uf -at- 40KV. My plan is to run them in parallel
>
> to get 0.016uf -at-40 kV. With my 15/60 trannie, 60 Hz resonance calculates at 
> 0.0106uf and the conservative safety margin of VAC(rms)*sqrt(2)*1.5 ~32KV 
> shows they should be all right from that standard. I can find nothing on the 
> power-handling capabilities of these in my references and at $25 a pop, I 
> don't want to pop too many! The "lumeniferous vortex" a.k.a. (4.5" coil) is 
> already swallowing too much of my pension check. Any guidance will be 
> appreciated. 
>
> Seeking the Lightning, 
>
> Matt Deming