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RE: [TCML] "Means for increasing the intensity ofelectricaloscillations" The Tesla Superconductor of 1901
No offense intended Gary, but I personally disagree on your opinion of
Tesla's claims...this man was the founder of that subject which we hold
so dear on this mailing list, and is the man whose ideas and inventions
were the catalyst of the industrial revolution, and who shaped much of
the world as we know it today. Remote control, radio, wireless power, ac
power generation and distribution, the list goes on and on, and so I
never doubt his claims unless I have had personal experience which
proves otherwise. Anyone that can rise from the ranks as a ditch digging
immigrant to beyond the level of Edison/Marconi ect and has had this
great of an influence on the world deserves every ounce of my respect.
I know we have issues on this forum regarding Tesla's wireless power
transmission claims, and so I keep my opinions about it to myself, but
this is fresh material as far as I am aware, so I thought it deserving
of our consideration.
I was using the term "superconducting" very loosely. Possibly I should
have omitted that term. I think its brilliant that he was thinking along
those lines in 1901 though. He was certainly thinking in terms of
optimization, and seems to be quite adamant about observing a
SUBSTANTIAL increase in efficiency via the application of the coolant,
even as applied to whatever materials he was using at the time. I don't
know what the relative efficiency gains might be, that is why I thought
it would be an interesting undertaking.
Spark gap heating is a consideration I hadn't thought of yet. I'll have
to wrap my head around that too. Good thinking.
I wonder if anyone has considered utilizing Peltier cooling panels
attached to spark gap heatsinks s to achieve greater cooling?
I am a better mousetrap kind of guy, and I like the idea of getting more
power out from a given input. Sure I could hook up a pole pig or a
potential transformer to get better results, but if I could increase the
efficiency of a coil driven by a 12/30 or a 12/60 to a level that
satisfies me/others - that lowers the price of the parts for my coil
and simplifies construction. More bang for the buck is always a bonus.
Thank all for your input.
Shannon Weinhold
Klasdja Intelligent Innovations
-----Original Message-----
From: Gary Lau [mailto:glau1024@xxxxxxxxx]
Sent: Tuesday, April 12, 2011 5:40 AM
To: Tesla Coil Mailing List
Subject: Re: [TCML] "Means for increasing the intensity
ofelectricaloscillations" The Tesla Superconductor of 1901
It might be worthwhile to put on our thinking caps before throwing
liquid nitrogen at our coils, and think about what's important.
Superconduction isn't possible with commonly available materials. Any
claims made by Mr Tesla should be taken with a grain of salt. As Dave
pointed out, some reduction in resistance might be achieved with
cooling, but you need to think about the relative impact in efficiency
that might be achieved. It turns out that the secondary resistance does
not have a large impact in efficiency and performance. Primary
resistance IS very important and any reduction there would be useful.
But the spark gap resistance is still going to be the larger loss.
Consider also, the losses incurred through the mains wiring. If your
coil is pulling 20A+ from the wall, you may find that gertting rid of
wimpy extension cords and beefing up the 120V wiring will have a
measurable impact in performance - an easy win.
Regards, Gary Lau
MA, USA
On Mon, Apr 11, 2011 at 10:02 PM, chris elfert
<snotblossom66@xxxxxxxxx>wrote:
> As it seems to be a law of physics that as a conductor's temerature is
> lowered, the the resistance is lowered. The amount depends on the
> conductor material of course, as can be seen in the experiments with
superconductors.
> In the scheme of things, copper is not nearly as good a conductor as
> many other materials, so the cooling effect will have to be much
> greater than just what can bew achieved with ice. Even Tesla said he
> used liquid air, which was most likely liquid nitrogen to get the
> effect he described. Since nitrogen doesn't liquify until at least
-320 Deg. F, ice isn't even close.
> For a home experiment, I might try starting with dry ice (frozen
> carbon dioxide), which is about -110 Deg. and is easily found. I am
> sure this should be sufficient to produce some significant
> improvements. For some temperature/resistance formulas in different
> conductors, this link may be helpful as an online calculator and
explanation.
> http://hyperphysics.phy-astr.gsu.edu/hbase/electric/restmp.html
>
> From: Dr.Hankenstein <dr.hankenstein@xxxxxxxxxxxxx>
> To: 'Tesla Coil Mailing List' <tesla@xxxxxxxxxx>
> Sent: Monday, April 11, 2011 8:35 PM
> Subject: RE: [TCML] "Means for increasing the intensity of
> electricaloscillations" The Tesla Superconductor of 1901
>
> Do it, dude! Fill that tesla coil up with ice and give it a try!
>
> Hank
>
> -----Original Message-----
> From: tesla-bounces@xxxxxxxxxx [mailto:tesla-bounces@xxxxxxxxxx] On
> Behalf Of Weinhold Shannon L
> Sent: Monday, April 11, 2011 2:57 PM
> To: Tesla Coil Mailing List
> Subject: [TCML] "Means for increasing the intensity of
> electricaloscillations" The Tesla Superconductor of 1901
>
> While browsing through some of Tesla patents, I ran across this one,
> patent number 685,012, in which he describes using artificially cooled
> coils to obtain "a great increase in the intensity and duration of the
> oscillations in a freely vibrating or resonating circuit". He
> describes the utilization of liquid air to obtain these results.
> He describes, as he has in all of his high potential patents, the
> magnification of oscillations, the increase being directly
> proportionate to the product of the frequency of the oscillations and
> the inductance of the secondary coil, and inversely to the resistance
in the secondary.
> Other conditions remaining the same, the intensity of the oscillations
> in the resonating secondary will be increased in the same proportion
> as its resistance is reduced. He states that by using this technology,
> it becomes viable to use a longer conductor, securing a much greater
> self inductance, without the extra resistance that would normally be
> encountered by such a change in length.
>
> I'm wondering if anyone has done any experimenting with this
phenomenon.
>
> Sounds like it may be a viable way to obtain greater output without an
> increase in input power...always a bonus.
> He doesn't indicate a percentage in efficiency gain. I am curious as
> to how well this works.
> I'm thinking I might have to rig up a primary and a secondary coil,
> each with an outer larger diameter pvc former, and try filling it with
> some sort of freezing fluid to test this out.
> Ideas anyone? Anyone else curious?
>
> Shannon Weinhold
> Klasdja Intelligent Innovations
>
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