RE: [TCML] NST Terry filter

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

I would avoid metal-cased resistors in Terry Filter applications.  The resistors need to stand off high voltage end-to-end, and the metal case will surely compromise that ability.

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 10:51 PM
> To: TCML
> Subject: RE: [TCML] NST Terry filter
> 
> 
> Would these resistors do? http://docs-
> asia.electrocomponents.com/webdocs/0031/0900766b8003123a.pdf I found them
> on RS online as the L100J1K0E is out of stock in Singapore. I am afraid of arcing to
> case occurring for these aluminium housed units though.
> Jeremy
> 
> > Date: Tue, 8 Dec 2009 17:41:04 -0800
> > From: bartb@xxxxxxxxxxxxxxxx
> > To: tesla@xxxxxxxxxx
> > Subject: Re: [TCML] NST Terry filter
> >
> > Jeremy,
> >
> > Mouser, Digikey, Newark, and Allied all have the 1k 100W resistor in
> > stock (all priced nearly the same).
> >
> > L100J1K0E is the number to look for. In the NST_Filter.jpg, the -ND at
> > the end simply indicates Terry bought them at Digikey (Digikey adds the
> > -ND to every part number they have). The E at the end of the number
> > indicates a ROHS compliant part (with the E or without is fine).
> >
> > Take care,
> > Bart
> >
> > Jeremy Chan wrote:
> > > 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
> > >
> > >
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