Re: SRSG and Terry filter overheating

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: Terry Fritz <teslalist-at-twfpowerelectronics-dot-com>

Hi,

In a previous post, I said to go to 17nF.  But I did not realize that a 
SRSG was being used (like I can't even remember the subject lines some 
days  O;-)).  In this case, go to around 28nF of primary capacitance as 
Mark suggests.

Cheers,

         Terry

At 10:07 PM 9/24/2003 -0500, you wrote:
>.011uF is almost precisely the resonant capacitor value for your 
>NST.  With a SRSG and your modified NST you could easily run up to about 
>.030uF. (LTR for a 15/60 is .0277uF)  Resonant rise, safety gaps set too 
>wide, and poor SRSG timing was the cause of the Terry Filter demise.  Of 
>course the good news is that $15 in MOVs you can buy from anywhere need to 
>be replaced and not your NST and/or caps!
>
>For an explanation of resonant rise, see Richie Burnett's 
>site:  http://www.richieburnett.co.uk/tesla.shtml
>see the Resonant Charging section.
>
>I would definately add more primary capacitance.  I have to recommend, of 
>course, the ubiquitous Geek Group Bucket Cap or the Geek MMC caps:
>http://www.thegeekgroup-dot-org/projects/bucketcap
>http://www.thegeekgroup-dot-org/mmc
>But of course any "normal" TC cap will suffice.
>
>Cheers,
>
>Mark Broker
>Chief Engineer, The Geek Group
>
>
>On Wed, 24 Sep 2003 08:00:12 -0600, Tesla list <tesla-at-pupman-dot-com> wrote:
>
>>Original poster: "Robert Hanford" <pomnept-at-comcast-dot-net> Thanks Terry,
>>I'm running a 15k 60ma (supposedly 70-75ma w/ some shunts removed) NST with
>>a .011 MMC. Could you clarify what you mean when you say "the coil could be
>>trying to go over voltage?" I will check my wiring thoroughly
>>tomorrow.Thanks for answering my newbie (kind of ) questions.
>>Rob
>