RE: [TCML] NST Terry filter

["Lau, Gary" <Gary.Lau@xxxxxx>]

No, the resistors cannot be replaced with chokes of any kind.  The resistors are an integral part of the R-C low pass filter.  The R-C filter is specifically designed to avoid the resonance that any L-C filter would have.  Filters using chokes were widely used until a more thoughtful analysis and simulation was performed, and it then became apparent that L-C filters cause more problems than they solve.  See more comments and analysis of NST filter networks at http://www.laushaus.com/tesla/protection.htm

But yes, you can use the two ceramic caps instead of the string.  

Regards, Gary Lau
MA, USA

> -----Original Message-----
> From: tesla-bounces@xxxxxxxxxx [mailto:tesla-bounces@xxxxxxxxxx] On
> Behalf Of Jeremy Chan
> Sent: Tuesday, December 08, 2009 8:20 AM
> To: TCML
> Subject: [TCML] NST Terry filter
> 
> 
> Hey all,
> I am trying to build a terry filter for a 15/30 NST according to the following
> diagram:http://www.classictesla.com/download/NST_Filter.jpgbut am having
> problems finding the 1K 100W resistors.What is their function, and would chokes
> wound using flyback cable rated at 40KVDC on ferrite cores help in filtering out the
> hf? If so, how many turns on the chokes would be required?Also I plan to replace
> the cap and 10M resistor string with 2 1nF 15KV ceramic caps in series on each
> side to give 30KV 500pF sans the 10M resistors. Is that workable?
> Thanks and regards,Jeremy

_______________________________________________
Tesla mailing list
Tesla@xxxxxxxxxx
http://www.pupman.com/mailman/listinfo/tesla