Re: [TCML] Designing an MMC

["DC Cox" <resonance@xxxxxxxxxxxx>]

The peak voltages might kill you cap bank.  With a 9 kV driver use at least
14 pcs in series for a 28 kV rating.  With a 12 kV nst I always use 16 pcs
in series for 32 kV rating.
Erms x 2.5 works good.

Dr. Resonance

On Fri, Jun 20, 2008 at 4:55 PM, John Matok <jmatoknoon@xxxxxxxxx> wrote:

> I'm a little confused when it comes to designing an MMC.  I think I
> understand the basics behind it.  Add them in series to increase the
> voltage
> rating, and add them in parallel to increase the capacitance (The wikipedia
> page on caps really helped).
>
> I'm starting to design my MMC and trying to grasp the concept behind it.
> I'm using a 9/30 NST.  I used the cap calculator on deepfriedneon and found
> my needed capacitance to be .0088uF (does that sound right?).  My question
> is this: Do I build my MMC to match my NST's rating?  For example, if I
> bought a bunch of Cornell-Dubilier 942C20P15K-F caps rated 0.15uF@2000V
> each, could I stick 5 of them in series to get an MMC rated at 10,000KV and
> .03uF?  That seems quite high for the capacitance needed (.03uF compared to
> .0088uF).  Am I wrong to try to build an MMC to be rated at .0088uF and
> 9000KV?  Should it be higher?
>
> Part 2 of my question: What are the consequences of making an MMC way to
> big
> for your needs in a Tesla Coil?  Lets say that I hypothetically built an
> MMC
> rated at 20uF and 25KV.  Would that effect my coil any different than
> having
> a decent, very sufficient cap (.008uF@9KV) my coil?  I wouldn't mind
> buying
> a few extra caps to give myself some piece of mind.
>
> John Matok
>
> _______________________________________________
> Tesla mailing list
> Tesla@xxxxxxxxxxxxxx
> http://www.pupman.com/mailman/listinfo/tesla
>
_______________________________________________
Tesla mailing list
Tesla@xxxxxxxxxxxxxx
http://www.pupman.com/mailman/listinfo/tesla