Confirming the Delayed Lenz Effect

[MileHigh]

Many things have been discussed that are worth a second read.  The capacitance is insignificant, should be ignored.  No special effects related to capacitance will be observed and it's the wrong investigative path to go down.  You don't discuss voltage excitation for coils in the context of this test - what counts is current and the number of turns.  Different gauges of wire with the same number of turns will give you the same strength of electromagnet as long as you ensure that the current flow is the same.  That obviously will not be the same case if you connect them to the same voltage source.

"Neutralizing the self inductance" is an awkward and misleading use of 19th century phrasing.  All it means is that when the SB coil resonates that when the capacitive voltage is at it's max, the current in the coil is zero, and the inductance is "neutralized."  The property of inductance is still there.

As an exercise for anybody that is interested go back to Farmhand's coil measurements where I showed that in a typical example the coil's inductive energy storage is 17,000 times the capacitive energy storage.  Calculate the resonance frequency.  Then, with the same initial conditions that I stated, calculate the peak voltage in the coil due to the self-capacitance when it resonates.

[Farmhand]

Well I think Tesla intended that the patent device is for pulsed DC or AC excitation. I'll have to read the patent better.
But the inductance of the coil will only be neutralized at a given frequency as far as I can tell, so that rules out DC
except for maybe when the coil is first energized as you say, but if the coil was energized for long periods that would be of little benefit.
It may allow a faster magnetization of the core if the core will allow it. Not sure. With huge coils it could be very helpful.

Most of the comments and tests are about a steady state DC. Not sure why.

Still I'm going by the patent claims, and what is written there by Tesla.

I guess it depends on where your point of interest is. Mine concern is with the patent claims, what the claims actually are and if they are true or false.

Also the other information given in the patent is useful.

Cheers

[Farmhand]

Basically what I see is, some people are making claims on Tesla's behalf that he did not make, or just making claims that are not
entirely correct ect. and that brings in people who try to discredit Tesla based on the errant claims other people imply he made.

I'm here to try to clarify what Tesla actually claimed, and see if it is true or false. Simple. I see myself as being in the middle.
I'm no expert but I think too many people attribute claims to Tesla he did not make. And too many people try to discredit Tesla based on those
claims made by others not by Tesla. I'm not infallible, but I seek the truth.

Cheers

All this dubious claims and pseudo skeptic discrediting of Tesla is unnecessary. All it does is put down a great inventor and fill pages with rubbish.

It also creates more confusion and more dubious claims as well as divide people and cause tension.


Who else is in the middle with me ? Anyone ?

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[MileHigh]

Farmhand:

My interpretation of the patent is that Tesla patented a way to make a coil into a resonator.  It doesn't even possess extra capacitance as compared to a regular coil.  It just facilitates higher voltage and therefore higher energy storage in the capacitive component of the coil.  The patent doesn't say anything beyond that.  It's not surprising, this was the dawn of the electrical revolution.

I am going to guess that the application might have been for his experiments in his own laboratory.  I don't think it ever really saw the light of day in a practical application.

If you want to push the envelope and open up the definition to include LC resonators in general, then LC resonators are used in RFID tags.  You pulse an RFID tag with a short burst of radio energy, and the LC resonator in the RFID tag stores some energy for a few milliseconds.  That stored energy powers the RFID tag for a fraction of a second so it has a temporary power source to broadcast out the bits it has been programmed with back to the RFID reader.

MileHigh

[Farmhand]

If the "COIL FOR ELECTROMAGNETS" did anything like produce anomalous energy and Tesla noticed it he would have said so I believe.

As far as I know of the only claims he made for the arrangement was the two claims at the end of the patent.
As far as patents go they are fairly clear cut and reasonably easy to understand.

Some patents make claims that are difficult to even read not to mention understand what they are trying to claim. 

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