Nathan Stubblefield Earth battery/Self Generating Induction Coil Replications

[one]

Hi everybody,

I went back to those 2 calculators today, after some sleep. The problem with the numbers from last night was the resistance. I already have 1 to 1.6 ohms -NOT 100milliohms.
So I plugged in 1.5 ohms and .7V since most everyone else is getting .7 volts, and I just changed the C and L sliders.

So somewhere between
500uF-599uF and
300uH-350uH
will produce 50 - 65 Hz

I live in the US so 60Hz is the most convenient number. Since I am going through all this I figure I might as well make it easy. 

So, the next thing to figure is How many turns, how fat and what gauge.

So, 360 turns of 24 gauge copper over a diameter of .85 inch will give 308uH
or,  360 turns of 24 gauge copper over a diameter of 1 inch will give 423uH

I used that telephone wire along with some zinc plated iron to make those  dry test coils. They fit well and 360 turns was do-able using 100 ft. It was 60 turns per layer 6 layers.

I am posting these numbers to give anyone who wants them a place to start winding.

One thing I saw on the RLC calculator is how easy it is to get to a very high frequency and how the graph goes below zero oscillations before it gets down to 60Hz very readily.

The resistance jacks the oscillation rate to the KHz range very quickly and so the fat wire that radio guy mentioned is not so hard to believe after all.

Now the only problem is to get the bolt diameter to work. .85-1 inch diameter I guess average.
I am wondering about using a piece of steel pipe then maybe filling that with iron wires or something to make a solid iron core.

@Joe and Gary,

The cap will help us tune this. In fact, I am going to look for a variable cap.

I know I said it a while ago, but I asked Hans about a spherical capacitor and he said theVandeGraf sphere is the cap part. I can easily see the sphere enclosing the terminals 10 and the spark happening inside the sphere. The sphere would keep the thing dryer and safe from movement, etc.

If we time the turns and diameter etc, we may not need an externally driven relay switch at all to make the make and break. It just might be a part of this design when it is tuned.

I urge people to play with those calculators.
One shows the Hz and Henries, the other shows the turns and wire gauge needed to produce the Henries.

jeanna

Jeanna


From what I have been seeing   in my  reaserch  trying to start  resonance   at 60 HZ  might  not  end up being the easy way .
I see you have found some of the reasons . 

If I was you  and you  had a few caps laying  around   I would  check  out what frequencys I could get  my coil to resonate  at  with  parts   on  hand .

Once  resonance  is achieved  it is  easy  to  use  a  diode  bridge   to  charge a battery .  ( Or cap  )  An  inverter  can  provide  easy  60 HZ power  from the battery 


gary

   

[jeanna]

in my  reaserch  trying to start  resonance   at 60 HZ  might  not  end up being the easy way .
I see you have found some of the reasons .

Thanks for your comments, Gary,

I am not sure I understand why I would want to fill a battery then invert it into 60 Hz when there is the opportunity to go directly to the 60 Hz. I admit to being quite naive about all of this, but as you probably can tell, I am very willing to learn.

I can easily get KHz range of frequency of oscillation with the caps I have on hand. I can also easily get 600 Hz.The voltage being produced by the galvanism of my coils is around 400 mvdc at the moment. Changing the volts is the only thing that didn't change anything in the frequency chart . (The amps went down as the volts went down.) The only big block seems to be the resistance. - It is hard to get it low enough - lower than the wire itself.

I would think I could wind the secondary to transform the power to 60Hz after it comes off the primary. So, I guess if I had it come off at 600Hz a 10:1 transformer winding would be easy enough.

Please explain why your research indicated to you that starting at 60Hz might not be the easiest way to go. Perhaps I am thinking about this the wrong way.

Thanks,

jeanna

[one]

in my  reaserch  trying to start  resonance   at 60 HZ  might  not  end up being the easy way .
I see you have found some of the reasons .

Thanks for your comments, Gary,

I am not sure I understand why I would want to fill a battery then invert it into 60 Hz when there is the opportunity to go directly to the 60 Hz. I admit to being quite naive about all of this, but as you probably can tell, I am very willing to learn.

Jeanna

one of the main reasons  for  storing  energy in a battery  like this is  alot of  applications    are  high  demand for short  periods of time .   
Storing the   power   in a battery  allows  you  to   use energy stored over time   in a short time period .

I can easily get KHz range of frequency of oscillation with the caps I have on hand. I can also easily get 600 Hz.The voltage being produced by the galvanism of my coils is around 400 mvdc at the moment. Changing the volts is the only thing that didn't change anything in the frequency chart . (The amps went down as the volts went down.) The only big block seems to be the resistance. - It is hard to get it low enough - lower than the wire itself.

I would think I could wind the secondary to transform the power to 60Hz after it comes off the primary. So, I guess if I had it come off at 600Hz a 10:1 transformer winding would be easy enough.

Please explain why your research indicated to you that starting at 60Hz might not be the easiest way to go. Perhaps I am thinking about this the wrong way.

Thanks,

jeanna

Both the   cap and coil  have to be physicaly  large enough to  handle  the  current.

lets  say  you want to  handle  3 amps ....... the  size of  the cap and coil that  will handle  3 amps is going to be pretty big .
Each time  you  raise  the frequency   you drop  the physical size requirements  .
Raising the voltage  will help with the size problem too .....less with caps  than  coils

Finding  equipment  to measure very large caps and   coils  can be a problem too .


gary

[Pirate88179]

@ Gary:

What about super caps?  I have some and I can get very small ones that are 5 farad.  I posted this in another topic and was told that a fared is a huge amount and I must be mistaken.  I am not.  I have already been using a .22 farad cap with my first earth battery experiments.  It works better than a battery and will store enough juice to light my one led for over two hours after being disconnected from the cell.  I have not seen any large size super caps (physical size) so I was thinking of using several 5 farad caps wired in either series or parallel.  That should be a lot of power storage for me I think.  what are your thoughts?

@ All:

I rescued an old mac monitor from my community dumpster this weekend and salvaged a lot of components from it.  Besides the flyback transformer and a bunch of caps and resistors, I found a large amount of magnet wire near the end of the picture tube.  Now here at Radio Shack (my only local electronics seller) they only sell magnet wire in spools of 25 feet.  Not enough to do any of the things I want to do.  I got about 200 feet from the monitor.  I have read that you can't splice magnet wire when wrapping a coil.  I don't understand why not as I think it could be soldered, which would melt away the enamel insulation, but that could be reapplied could it not?  I will still probably have to order a large spool on-line.  It looks like we are going to have plenty of uses for it.

Bill

[one]

I got my  coil  finished  enough  to  test.

I still  have  some  things to do .   like  cut the  copper  winding  shorter.
I am going to  try to  match the  inductance with the  iron  winding .

I am going to wait  a few days ...........mostly because my thumbs hurt





I learned  alot about how NOT to wind  a coil ....

one of the  things  I wanted to test is   if  bigger wire is better.

I used   # 6 copper   
I got  some  Iron  wire for tying  rebar
I made a cable   with 12 strands .  It was a little oversized .. I think I would use 10 strands next time .

I am thinking that  larger wire  has less resistance .......so  the small  currents   generated  will carry through  easier . 
I was shooting  for  a cable of iron wire about the size of the insolated  copper
I wanted the  iron larger  because  it is higher resistance , ......

I see that my voltage is low compared to others .
I think that may  be in part that my outer windings are pretty loose .

If you can't  read the meter the voltage I got was  .54 V