Nathan Stubblefield Earth battery/Self Generating Induction Coil Replications

[Bruce_TPU]

I think this is the pic he is referring to.




Can you elaborate on the positive feedback. I assume you mean through the single wire secondary.

Hi Iota Yodi,
I would try both.  First try the secondary by adding a little current, and then try it into the primary.  One would need a way to measure the strength of the B field and see if there is any increase.  I believe there would be.  That would be step 1.  Step 2 would be working on producing just enough current (I can help with this) from the aforementioned B field, to kick start the process.

Cheers,

Bruce

[kwemvolt]

someone may know whats going on here . take an aluminum plate , one very rusty steel plate and a gal pipe or bolt.
weld the gal bolt or gal pipe to the rusty steel plate so that the rusty plate makes a base for the bolt or pipe. clamp the rusty plate to the aluminum plate, now take a lead and connect it to an earth stake the other end connect to the aluminum plate. now thate your meter and place the probes between the aluminum plate and the gal .
i assume this is "The rusty bolt effect" is a description of radio interference due to interactions with dirty connections or corroded parts. but assumptions can be wrong .regards to all kwem

[drodenbe]

Iota, 

was just going through the forum and found your posting on your buying the cotton covered wire.  You might try a local motor rewind business.  We have one here and he has been around for a while.  He has several 5000 and 10000 feet rolls of old cotton coated wire 18 and 20 gage.  He no longer needs it.  Been setting on shelf for years.  I buy as much as I like for 5.00 a pound.  Great find.  You might try the same.  Well I will go back to sleep now!

[choro]

Hi all !
   It was difficult for me to find the cotton covered wire and I decided to do
the Nathan stubblefield earth coil by another way. I separated the steel wire ( Ø = 1 mm) and the copper wire ( Ø = 0.8 mm, 50 m) by linen thread ( Ø = 1 mm). So I have had 4 strands (see the pictures).  After each layer I used the masking tape (it is porous and is glued when wet) and one layer of linen thread. And so on.
The potential difference of the finished dry coil was between 250 to 620 mV  (maybe, depends on the orientation and time of day). In distilled water  the potential difference quickly risen to 850 mV, pulled out of the water - the potential difference all the time now stays from 750 to 780 mV, the coil is dry to the touch. The compass needle deviates slightly if the copper and iron contacts were breefly closed. With 9 V battery hang the copper and iron contacts (the other two are open), the compass needle deviates much. But the battery is not discharging ! You can use this free 'flash' of magnetic field for another purpose â€" motors, coils ... etc.  Instead of 9 V battery you can use another source, but before breakdown. Add that, when battery is hooked, the coil behaves as a capacitor with a rather large leak.

[Pirate88179]

Choro:

Nice work.  I made 2 of mine the same way you did.  Mine were much thinner though.  I like your observations.

Bill