Re: capacitor noob question

["Tesla list" <tesla@xxxxxxxxxx>]

Original poster: robert heidlebaugh <rheidlebaugh@xxxxxxxxxxxxxx>

Devon: Your first problem is that 10Kv eff is not what it seams. The voltage
listed is equivelent to a DC heating value of 10 Kv. The actual peak voltage
is 10Kv x 1.414 or aprox 15Kv with no safety margin, Your capacitor voltage
rating should be 30Kv so if you use 2.5 Kv capacitors in series you will
nead 12 in a string to get 30 Kv and 12 strings in parallel to get .0022 uFD
of total capacitance or 144 capacitors total count. The cost may be a little
high. I suggest you look for a larger capacitance value . I use .25 uFD.
most other people use .15 uFD this reduces the cost of assembly.
     Robert    H
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> From: "Tesla list" <tesla@xxxxxxxxxx>
> Date: Sun, 20 Mar 2005 08:20:03 -0700
> To: tesla@xxxxxxxxxx
> Subject: capacitor noob question
> Resent-From: tesla@xxxxxxxxxx
> Resent-Date: Sun, 20 Mar 2005 08:24:06 -0700 (MST)
>
> Original poster: Devon Ferns <dferns@xxxxxxxxxxxx>
>
> I'm about ready to build my first coil now.  I've talked with a guy that
> has built a few coils before and he suggested using a neon transformer that
> is used to power those neon lights underneath cars.  I'm not sure what the
> voltage output of these are yet but say 10kV or something.
> He also suggested I go searching for a bunch of used disposable cameras to
> get the capacitors out of them.  They are rated at around 350V or so with
> 50uF.
> This made me wonder about the voltage rating.  Is it fine to string say 29
> or 30 of those together to get up to 10kV rating? How do you go about
> setting up the capacitors?  I think that the capacitance of these isn't
> exactly right for what I need anyways but I'm more concerned with the
> voltage ratings.  If I hooked up 1 350V cap to 10kV wouldn't it just blow
> to bits?
>
> The highest rated cap I could find was only 2.5kV at 2.2nF which for the
> size of the coil I want to make is about what I need, but not the correct
> voltage rating.
>
> Thanks
> Devon.
>
>