Re: [TCML] Stuck at 36"

[bartb <bartb@xxxxxxxxxxxxxxxx>]

Hi John,

Stand off voltage is not great for 14 caps. It can be done and it may 
last a long time, but I would suggest something in the range of 16 to 18 
caps to help ensure reliability. A 4 x 16

Here is an MMC chart that you might find useful.
http://www.classictesla.com/download/mmc_cap_chart.pdf

The first page is 60Hz, the second page is 50Hz.
The NST's are listed (12/120 = 12kV at 120mA).
It will list Resonant, Static Gap LTR, and RSG LTR values.

These are only basic recommendations.

Ideally, you want to derate by 2.5 x peak voltage for your cap bank. Of 
course, you can cheat a little. Try to set a limit on cheating however 
(say no lower than 2 x peak or near). Cheating too much gets risky. One 
good thing about MMC's, if a punch through occurs, you only lose a 
couple caps (however, over time, holes are being blown into the 
dielectric, so there is degradation, especially at overly high voltages 
for the string). Issues like this is why derating is standard practice.

Take care,
Bart

b.jbohn@xxxxxxxxxxx wrote:
> Thanks for the info Bart
> Will the arangment of 4strings 14caps each handle 12kv at say 90ma?120ma
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