Confirming the Delayed Lenz Effect

[gyulasun]

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There is one other type of "bifilar" coil that is often used and confused with Tesla's design. This is the "hairpin" coil. The hairpin configuration uses the same amount of wire but is non-inductive. If you have the time, you might consider winding a third bolt as a hairpin, and repeat the inductance and electromagnet tests with it.
The hairpin winding is just what you did for the Tesla bifilar, but without cutting and splicing the ends.
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Hi TinselKoala,

Thanks and at a later time I can do the third coil too.  I understand also that such bifilar coil has only a few nanoHenry inductance depending on how precisely the winding is done.  Long time ago I also tested Caduceus coils for inductance but they have a residual inductance in the some microHenry range, flux cancellation is not so precise in them like in bifilar coils.
Gyula

[ALVARO_CS]

hi Hoptoad
Are those "totallydamped" pages yours ?
If yes, Ill like your opinion about the possible damage of transistor (MileHigh states)
in the circuit I posted earlier (No 19)
thanks
cheers

[Farmhand]

Hi guy's started a thread here -- http://www.overunity.com/13460/teslas-coil-for-electro-magnets/new/#new  .

I'll be posting some results there soon, feel free to join in.

Cheers

[synchro1]

Thank you Gyula. The original experiment involved  shorting both coils accross a "D" cell battery. The obvious difference between the experiments is that power is free to rise to load with the battery, unlike Gyula's latest try, where the power is governd. Maybe the bifilar electromagnet will draw more input then Gyula's inputing to it, if you feed it. The original experiment allows for increased current consumption compared to Gyula's generous attempt. Enlighting regardless!

I find it hard to believe "Tesla-Coil-builder" would set out to decieve anyone judging from his polished website. It remains important that any erroneous experiment be exposed as fake.

A monopole of increased strength appears in the center of my "SB Spiral Coil". A window coil of single wrap, a large loop of wire with a large space in the center, generates two poles. The serial bifilar displays a dramatic difference in this Spiral configuration as a pulse motor coil. This is where I can independently demonstrate doubling of "Magnetic Field" strength. A monople of doubled strength is formed in the center of the coil. This model broke all the speed records. The red plastic wheels allow the axel and spinner to rotate inside the wooden cup.

[MileHigh]

Synchro1:

Gyula's second experiment was done properly.  The regular and the SB coil have the same wire and the same number of turns so the resistance will be the same.  Therefore the current draw will be the same.  In fact, that's just secondary logic.  You know that the basis for making the comparison between the two coils is that you feed both of them the same current level and see what happens.  That's the primary logic.

Here is a thought experiment:  You have an ideal voltage source power supply connected to the nail and the wrapped wire, just like the original setup from the web page experiment link.  The wire is a special imaginary wire where we can define any resistance for the wire.

If we set the voltage source to one volt, and the wire resistance to one ohm we get one amp of current flow.  If we set the wire resistance to 0.001 ohms we get 1000 amps of current flow.

So that's a meaningless experiment.  The strength of the electromagnet has nothing to do with any potential differences in resistive load of the wire wrapped around the coil.  It has to do with the current flowing through the wire.  That's a concept that all must understand.  A magnetic field is created by current flow alone, it has nothing to do with voltage and it has nothing to do with the resistance of the wire or the amount of resistive electrical load the setup puts on the battery.

MileHigh