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High midnight at the Texas corral
Original poster: "Bert Pool by way of Terry Fritz <teslalist-at-qwest-dot-net>" <bert.tx-at-prodigy-dot-net>
>Antonio has done some theoretical work which suggests that
>a special magnifier design may outperform a 2- coil system,
>but this is difficult to achieve, and has never been demonstrated
>in a spark-producing coil.
>
>John
John, all,
I say Antonio's premise of a magnifier's out performance of a conventional
coil has already been successfully demonstrated in a spark producing coil.
We have a magnifier which has produced 15 foot sparks, photographed and
measured. The tank capacitor is a small Maxwell 0.015 ufd cap. That's not
a typo - that is 0.015 ufd. The transformer is a dinky 1.5 kva unit, which
admittedly was pushed hard - it actually got warm to the touch. The
rotary disk is maybe 6 inches in diameter. The resonator coil is 24 inches
long.
Several people on this list attended a 1997 Teslathon and saw this coil
perform, first-hand.
OK, somebody out there show me ONE conventional coil running a 0.015 ufd
cap making 15 foot sparks. Just one. Then I'll say conventional coils can
match magnifiers' performance.
I helped Wild Bill Emery build the Wart Hog, a big conventional coil, and
it makes pretty impressive 12 foot sparks, but jeez, we're pumping 15 kva
from *two* pole pigs into it, and we have to use between 0.08 to 0.10 ufd
capacitance to get that much out. That's a lot of capacitors which equates
into a lot of dollars. (and Bill, you know I'm not saying anything bad
about the Hog - it's a beautiful machine!)
On one hand, 12 foot sparks from a conventional coil, using TWO pole pigs,
versus 15 foot sparks from a magnifier using a potential transformer that I
pick up and carry around by myself? And people on this list say
conventional coils and magnifiers have equivalent performance???
I say bull hockey! *Anybody* out there, anyone at all, got a conventional
coil that can kick my magnifier coil's butt?
Is anyone else on this list making 15 foot sparks with any conventional
coil, using a commercial power transformer that they can pick up and carry
by themselves? NO? And I ain't no Arnold Schwartzenegger either - I'm a
50 year old paper pusher.
Show me 15 foot sparks with ANY conventional coil, ANY size transformer -
but with just one constraint: 0.015 ufd capacitance. Let us see that
conventional coil equivalency in action, with real sparks.
Most of you conventional coil builders probably have a 0.015 ufd
capacitor. You get excited when, after much hard work, and fine-tuning,
and tweaking, and getting the toroid JUST so, you finally get your coil's
sparks to stretch out to reach maybe 6 feet or so and then WHAM! you kill
your garage door opener. Then, if you want bigger sparks, you go to a
bigger transformer which means you're going to need to buy or build a
bigger cap.
I challenge the coilers on this list-serve to take your 0.015 ufd caps and
build a conventional coil that doubles or triples your 6 foot spark length
and in so doing, shames me such that I have to tuck my magnifier building
tail between my legs and slink away, vanquished, into the darkness . . . .
but I really, really doubt that I'll have much call to do any slinking.
Any Armchair coil-jockies who've never even built a coil, the ones who can
only bandy about "simulation this" and "simulation that" can keep quiet - I
want the *real* conventional coil builders who have varnish under their
fingernails to step up and build a 0.015 ufd coil and show me those
conventional *equivalent* 15 foot sparks I keep reading about but have
never seen.
Bert Pool
http://hot-streamer-dot-com/pool/tesla.htm