Tesla's "COIL FOR ELECTRO-MAGNETS".

[Magluvin]

A strange thought...

Wind a single layer bifi in series connection having 1 wire on each end.
Now begin a new second layer bifi starting from the same point as the first layer did only wind it in the opposite direction than the first. If the first was clockwise looking at the starting end then the second layer bifi starts counter clockwise.

Now, the second layer is also series connected and has 2 leads, one at each end. This leaves us with 4 leads 2 at each end. If we apply a dc current to the ends of the first coil we will have N at one end and S at the other end of the coil. If we apply the same dc to the second coil, same polarity same ends of the coil, the N and S field will be switched because the second coil was wound counterclockwise.

Now, take the leads of the second coil and connect them to the first coil leads at opposite ends. The coils are wired in parallel now but reverse electrical polarity in reference to the far end connections, but now we have both coil fields with N on one side and S on the other.

Ill draw it if need be. But whats my point??

In the first and second layer bifi coils there is 50% of input voltage between adjacent windings. BUT, now look at the voltage differences between the adjacent first and second layer windings.  If the input is 100v, the difference between the first turn of the first layer and the first turn of the second layer is right near 100v.  Not 50v. And its at both ends of the coil this happens. Im not totally sure what happens between successive adjacent layer turns, but I think they diminish toward the middle to the 50-50. Do they? lol. I have to try this later, and see what happens.

I find it to be interesting considering with just the bifi we get the 50% deal between windings, but here we are introducing at least near 100% difference between windings. Even if it just leveled out to 50-50 in the middle of the coil, the added increase outward to the ends of the coil should have some advanced effect beyond the bifi alone.

Hmm, and more layers could be made. Or, hmm, offsetting the starting point of the second layer, could we get maybe 75v between all adjacent layer windings?  Dunno. Just thinkin.  I feel a little of my 'spark' coming back with this project.

Mags

[MileHigh]

The lower resonant frequency of a series bifilar coil shows that the self-capacitance is higher, but not by much, perhaps 40% to 70%.  With a regular coil you might have one volt of potential between turns and in a series bifilar coil you might have 50 volts of potential between turns.  That's were the moderately larger self capacitance has a higher "capacity" to store energy because of the increased potential difference between the "plates" (adjacent turns) of the self capacitance.

An equivalent to a series bifilar coil would a regular coil in parallel with a high-voltage capacitor.  The capacitor can be any size so it's much more flexible.

You can experiment with series bifilar coils or regular coils hooked up as LC tank circuits and observe their behaviour, and you won't find any "extra energy."

MileHigh

P.S.:  The Earth is slowing down!  That's why we have leap-seconds.

[forest]

A strange thought...

Wind a single layer bifi in series connection having 1 wire on each end.
Now begin a new second layer bifi starting from the same point as the first layer did only wind it in the opposite direction than the first. If the first was clockwise looking at the starting end then the second layer bifi starts counter clockwise.

Now, the second layer is also series connected and has 2 leads, one at each end. This leaves us with 4 leads 2 at each end. If we apply a dc current to the ends of the first coil we will have N at one end and S at the other end of the coil. If we apply the same dc to the second coil, same polarity same ends of the coil, the N and S field will be switched because the second coil was wound counterclockwise.

Now, take the leads of the second coil and connect them to the first coil leads at opposite ends. The coils are wired in parallel now but reverse electrical polarity in reference to the far end connections, but now we have both coil fields with N on one side and S on the other.

Ill draw it if need be. But whats my point? ?

In the first and second layer bifi coils there is 50% of input voltage between adjacent windings. BUT, now look at the voltage differences between the adjacent first and second layer windings.  If the input is 100v, the difference between the first turn of the first layer and the first turn of the second layer is right near 100v.  Not 50v. And its at both ends of the coil this happens. Im not totally sure what happens between successive adjacent layer turns, but I think they diminish toward the middle to the 50-50. Do they? lol. I have to try this later, and see what happens.

I find it to be interesting considering with just the bifi we get the 50% deal between windings, but here we are introducing at least near 100% difference between windings. Even if it just leveled out to 50-50 in the middle of the coil, the added increase outward to the ends of the coil should have some advanced effect beyond the bifi alone.

Hmm, and more layers could be made. Or, hmm, offsetting the starting point of the second layer, could we get maybe 75v between all adjacent layer windings?  Dunno. Just thinkin.  I feel a little of my 'spark' coming back with this project.

Mags

Ooooooooouch ! I think you touched my coil which I wanted to patent later he he . Don't worry, I do not expect to finish it in my current financial situation...

[forest]

The lower resonant frequency of a series bifilar coil shows that the self-capacitance is higher, but not by much, perhaps 40% to 70%.  With a regular coil you might have one volt of potential between turns and in a series bifilar coil you might have 50 volts of potential between turns.  That's were the moderately larger self capacitance has a higher "capacity" to store energy because of the increased potential difference between the "plates" (adjacent turns) of the self capacitance.

An equivalent to a series bifilar coil would a regular coil in parallel with a high-voltage capacitor.  The capacitor can be any size so it's much more flexible.

You can experiment with series bifilar coils or regular coils hooked up as LC tank circuits and observe their behaviour, and you won't find any "extra energy."

MileHigh

P.S.:  The Earth is slowing down!  That's why we have leap-seconds.

It also mean higher charge stored, I think nicely distributed among coil wires...

[Magluvin]

Ooooooooouch ! I think you touched my coil which I wanted to patent later he he . Don't worry, I do not expect to finish it in my current financial situation...

Sorry. 

Thought again and just a first and second layer, opposing windings, not bifi will have 100% difference between each adjacent layer winding.  Will have to try both ways.

Mags