RE: [TCML] Ceramic Caps

["Lau, Gary" <Gary.Lau@xxxxxx>]

I doubt it - you really do get what you pay for.  I wasn't able to see the link you provided, but judging by the price, they're probably ceramic disks.  The losses are very high and they have an unfortunate property of varying their capacitance as a function of temperature.  So as you run it, the tuning frequency becomes a moving target.  It may kind-of work, but you really want only polypropylene caps.

Regards, Gary Lau
MA, USA

> -----Original Message-----
> From: tesla-bounces@xxxxxxxxxx [mailto:tesla-bounces@xxxxxxxxxx] On
> Behalf Of Ben Sneath
> Sent: Tuesday, December 04, 2007 10:49 PM
> To: tesla@xxxxxxxxxx
> Subject: [TCML] Ceramic Caps
>
> Hi all,
> i'm contemplating building a .0026uf, 27kv MMC for my new
> coil and was wondering how suitable ceramic caps were for
> tesla use. the following link are the ones i'm thinking of
> using:
>
> http://www.dse.com.au/cgi-
> bin/dse.storefront/4756182f05e6e796273fc0a87f9c06e3/Product/View/R2394
>
> Thing is, there only 75c each... they seem to be that little
> bit too cheap
> dosent say about their rf capabilities...
> anyone ever used these type of caps? power source is going
> to be an old ac flyback transformer + the common 2n3055
> driver circuit.
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