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Re: MMC Capacitors from Dr. R.

Original poster: "Virtualgod" <mike.marcum@xxxxxxxxxxxx>

True, but don't you have to consider the Irms rating as well? If the 3kv ones have a much lower Irms rating (not sure what it is, but the 2kv ones have like a 8A rating without getting too warm) then more strings would be needed. Plus you have to consider what voltage/ capacitance rating you are shooting for. I think there's a MMC calculator somewhere (I think it was on the geek group site, can't remember) where you input calculated specs/cost of what you need and the individual cap's spec/cost and it gave you the cost of the array made from a given cap.

Mike
----- Original Message ----- From: "Tesla list" <tesla@xxxxxxxxxx>
To: <tesla@xxxxxxxxxx>
Sent: Thursday, December 02, 2004 10:05 AM
Subject: MMC Capacitors from Dr. R.


Original poster: "S&JY" <youngsters@xxxxxxxxxxxxxxx>


For those contemplating buying either the 0.1uF 3KV or 0.15uF 2KV caps from
RRC, here is some food for thought.

At rated max volts, which caps will give you more bang for the buck? Let's
do the calculations:  Joules = 0.5*C*V*V.  The 2 KV cap will store 0.45
Joule, and the 3 KV cap
will store 0.3 Joule.  Ya gotta love the V^2 factor!

Clearly for the same cost, the 3 KV caps are a much
better bargain.  Saying it another way, your MMC will cost significantly
less if made with the 3 KV caps.

--Steve Y.

----- Original Message -----
From: "Tesla list" <tesla@xxxxxxxxxx>
To: <tesla@xxxxxxxxxx>
Sent: Wednesday, December 01, 2004 7:53 AM
Subject: Re: Capacitors


> Original poster: "Dr. Resonance" <resonance@xxxxxxxxxx>
>
>
> We stock STK caps in 0.15 uF at 2 kV and 0.1 uF at 3 kV. We also stock > CD
> caps in 0.15 2 kV.
>
> Two in parallel with give you 0.3 at 2 kV or you can use three 0.1 uF 3 > kV
> units in parallel to obtain 0.3 uF at 3 kV.
>
> Contact me off-list if you need some.
>
> Dr. Resonance