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Re: [TCML] MMC



Hi Mitch,

The .0001 uF is not going to be a problem, but the voltage rating is. Your NST is rated at 10 kV RMS which means peak voltages of 10*sqrt(2) or 14.14 kV. At 10 caps/string you would be lucky to get a few minutes run time before you started wholesale replacement of caps. IMO, 3X15 would be an absolute minimum and 4X20 would be a lot more comfortable operationally, if not financially (transients DO occur). I am not familar with the specific cap you are using, but you want ones with very "beefy" connections and low internal resistance so they don't heat up while running..

Hope this helps avoid some problems,

Matt D.


-----Original Message-----
From: Mitch Newman <gbith@xxxxxxxx>
To: tesla mailing list <tesla@xxxxxxxxxx>
Sent: Sun, 10 May 2009 5:37 am
Subject: [TCML] MMC




Hi all,
As some of you may know, i am new to the Tesla world.But i wanted to know, 
because some of the materials used in the Tesla coil can be hard to find i just 
wanted to know if i could use "20 X 0.47 uF / 1000 V. METALLISED POLY AXIAL 
CAPACITORS" set up in 2 stings of 10 (caps) set up in parallel, to reach the 
0.0095uF, 10kv that the output of a 10kv, 30ma, NST.but the NST needs 0.0095uF 
for the capacitors but, using the MMC calculator on "DeepFriedNeon.com" the 
capacitance of those capacitors wired up in two strings in parallel (10 caps 
each) it comes to 10kv and 0.0094uF.
Will that make a major problem being the capacitance off by 0.0001or will it be 
fine like that ?
Thanks heaps,Mitch ~ Gb
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