[TCML] Trans-cap uf matching, over/under?

[Brian Hall <brianh4242@xxxxxxxxxxx>]

I have a 15kv/30ma NST so the ideal capacitance is .0053 uf, but since I don't want it to match impedance with the transformer and risk frying out a leg, I have read that 1.3 to 1.4 x that capacitance is desirable, aka LTR (larger than resonant ... impedance)

 

So, that would give me a range of .0068 to .0074 uf for the tank capacitor (at around 30 to 40 kv)

 

My question is how would the performance be affected if I were to use 0.011 uf (a hair over 2 x resonant impedance)?   

 

And what would happen if I go a bit under it, such as .0033 uf?  What effect would that have on the TC circuit or even the hv transformer?  Would it hurt anyting?

 

Lastly, if I were to connect 2 NSTs of the same value in parallell, such as two 15/30 NSTs, to basically get one 15/60 power supply, would the calculation for the impedance of the 2 NSTs of Z = E / I (to find the cap value) be the same as if I had a single 15/60 NST?  if it were, then .011 uf would be a hair above resonance with the transformer, but not as high as 1.3 x above it ... 



---------------------------------- 
Brian Hall 




 		 	   		  
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