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Re: [TCML] MMC design for 12kV @ 120mA xfmr



Hey John...

Looking at what you have planned, the voltage of the second string ( 12KV) will most likely not last too long at all. To achieve a cap system rated for acceptable usage ( voltage paeks) and at the desired uF, 3 strings of 11 caps will be needed...

do a Google for " JAVATC" and look at the top of the page for JAVAMMC calculator.

Scot D


John wrote:

Planing out my MMC before I order some CD942c 0.15µF caps. I'm planing
on building my next coil with a 12kV @ 120mA xfmr.  LTR cap value =
0.0398µF so I'm setting my cap value at 0.04µF.

series string A: 2kV @ 0.15µF / 10 = 20kV @ 0.025µF
series string B: 2kV @ 0.15uF / 6 = 12kV @ 0.015uF

Both strings in parallel giving 0.025µF + 0.015uF = 0.04µF

Does that look good?



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