RE: [TCML] Terry Filter

[<chipford@xxxxxxxxxxxxxx>]

Really. I asked the question before I started building this thing and was told the cap pf value wasn't that important. My filter has (7) 820pf 2000volt caps/bank. This is off slightly from the .0033uf caps I see in most drawings. Please advise.

Chip


---- "Lau wrote: 
The capacitor configuration need not and should not be altered as a function of NST voltage.  Only the number of MOV's must be changed.

Someone once suggested that the capacitor string could be changed to a lower voltage when using a lower voltage NST to perhaps save a few pennies, but the string capacitance should always stay the same pF value regardless of voltage.

Regards, Gary Lau
MA, USA

> -----Original Message-----
> From: tesla-bounces@xxxxxxxxxx [mailto:tesla-bounces@xxxxxxxxxx] On
> Behalf Of Thomas Ryckmans
> Sent: Monday, December 21, 2009 2:44 AM
> To: 'Tesla Coil Mailing List'
> Subject: RE: [TCML] Terry Filter
> 
> Hi Chip,
> 
> I used a few taps (banana plugs) on my filter - allowing me to select the
> number of MOVs/caps that are seried
> 
> http://picasaweb.google.co.uk/Thomas.Ryckmans/TeslaStuff#51914351748720649
> 62
> 
> 
> 
> -----Original Message-----
> From: tesla-bounces@xxxxxxxxxx [mailto:tesla-bounces@xxxxxxxxxx] On
> Behalf
> Of chipford@xxxxxxxxxxxxxx
> Sent: 21 December 2009 01:31
> To: tesla@xxxxxxxxxx
> Subject: [TCML] Terry Filter
> 
> I have my terry filter about 50% done. While building it, I asked myself a
> question. Why would a person build anything but a Terry Filter capable of
> protecting a NST of 15,000 volts? I ordered 14 MOV's from dig-key. For 4 or
> 5 dollars more, I could have had 16. Now if i want enough for a 15k trany, I
> gotta pay shipping again.Correct me if I am wrong. If I build a Terry filter
> capable of protecting a 15K volt trany, I can use it to protect my 9000 volt
> NST without any modifications. I bring this up because, as we all know,
> parts get swapped from coil to coil and if I decide to built a larger coil
> with my 15k trany later on, I could've just moved it over without worry. Am
> I wrong?

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