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Re: pole pigs - they're great but why didn't ypu protect...
In a message dated 5/22/00 6:05:38 PM Pacific Daylight Time, tesla-at-pupman-dot-com
writes:
> Original Poster: "G. G. Ford" <swimp-at-home-dot-com>
>
> Tesla List wrote:
>
> Ok, David,
>
> I like big xfrmrs too - I have a way over-heavy
> duty capable 1-kva USNavy Surplus 5 kvac SP
> 115 VAC iinput transformer - Stretch Out two
> coat hangers, try a Jacob's latter...and a white
> arc burning iron results - But tell me, why didn't
> you protect your NST w/ a series RFC on the HV
> terminal and a Shut (between load and RFC) RF
> Capacitor to carry the RF?! That way you'd have
> attenuated your XFRMR's HVRF Insult! If it is
> a two HV terminal NST, two RFC's and one Cap
> can be used, otherwise the Cap could short the
> HV RF to GND. Better make sure XFMR-RFC-
> -CAP is nonresonant at 60 Hz, BTW.
>
> Gary http://members.home-dot-net/swimp/
Gary, David, all,
I agree that pole pigs are the utimate TC transformer, and that
PT's are excellent too, but the NST's do have some advantages
in some situations. For instance for a light, portable, yet efficient
coil they serve a purpose. I've used them for small coils up to
42" to 65" sparks, and I've had mostly no failures when using sync
gaps. The last two transformers I tried did fail, but they may have
been weak or defective. The ones I've been using for years are still
working. I don't even use any protective networks other than
safety gaps.
My coil can be seen at:
http://members.aol-dot-com/FutureT/TT-42index.html
Cheers,
John