Stubblefield coils (bifilar) and speculations

[resonanceman]

I was reading what the internet had to say about NS again and I happened to notice that the thickness of the cu including the wrapping is the same as the thickness of the fe wire. So, I may be on to something, here. (Maybe everyone already noticed that and I am the last to see it.)

Jeanna

I  agree the  ratio  of  copper and   iron  is probably important. 

When I  built my cell I was shooting  for  the iron  being the same size as the wrapped cotton .......mostly because  of  resistance .    A larger wire  will have less resistance  then a  thiner wire .


I can't  find  it now  but I  remember seeing a ratio  for  water batterys   

I am guessing  that the ratio  for the   galvanomic  prosess  is probably  different than the  ratio for the magnetic   prosess I am playing with .   


HHHhhhhhmmmmm     I can  test  the  magnetic   part  with my  big  cap ........ I think I will  try putting it together  with  2 iron plates for each copper ......   I have plenty  of  iron ........ the  copper is  expensive ......it  would cost $30  for another  coil  of copper  to test  going the other way .   


gary

[jeanna]

......it  would cost $30  for another  coil  of copper  to test  going the other way .   


gary

How do you test the magnetic part with a cap?

I like testing with a cap in general because the meter is not able to mess with things, but how do mean to test the magnetic part?

The cost is the reason I was and still am making rather diminutive coils. I can see the effects and change them for less money. When I think I am ready I can pay the big bucks for some plenty-copper-wire.

[Pirate88179]

@ Jeanna:

Yes, now I see what you mean. (Thanks to Joe posting the Tesla photo)  The view you are talking about is a cross-section.  And yes, when I reached the bottom in my windings I started up again and the cu was directly on top of the cu and the fe on top of the fe, and so on.  But, your readings are similar to mine so maybe it does not matter all that much?

@ Joe:

I think I see what you are getting at with the cup of water experiments.  I agree about the cu wire bing bare.  One thing I have not tried, that Han's said should work the same, is to use insulated fe wire and bare cu wire.  Winding would sure be easier.  Maybe I should test on a very small scale to see if it still works like that?  We would still need cotton to insulate the core, and the layers I believe.  What is it about the copper itself?  And its relationship to the iron wire?  I was always wondering if we could use another metal (cheaper) than copper for the wire?  The only other thing I could think of that we could get easily would be aluminum wire.  Maybe this would work better?  NS did not have access to AL wire at that time, I think, so his not using it might not be because it would not work?  (It might work better) Again, so many things to experiment on and explore. (So little $$ for materials)

Bill

[Pirate88179]

@ All:

I have a new personal record after burying my coil all the way:


AC Volts: 1.3 vac
DC Volts: .93vdc
Ma: 56mA  (drops to 47 mA pretty fast)

OK so, well, I added a little distilled white vinegar (5% solution) to the hole before inserting my coil.  The readings are staying consistent.  I also added some water while inserting my coil so we will have to see what happens.

Bill

[Pirate88179]

@ All:

I am going to try to tie the cell together with my electrodes to see what kind of number I can get now.  My camera batteries are dead, but if I can make my ac adapter cord reach far enough, I will try to take a few photos.

Bill