Thread: Hubbard Coil
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Old 11-11-2009, 08:59 PM
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morpher44 morpher44 is offline
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response to dragon

Originally Posted by dragon View Post
Nice video... quite interesting. Are these all just picking up ambient energy that is showing on the scope? There are no shorting coils?

I did a short experiment with 3 coils, one outer coil as a reciever a center coil shorted and an inner coil as an output. There was a dampening effect with the shorted coil and a somewhat reduced voltage of the central coil.

One thing I did find interesting in the test... I measured the gauss produced by the coil without the central coil shorted, it reached 105 gauss. With the central coil shorted the gauss went up over 600. Also the input for the driver circuit was reduced considerably using the shorted coil in the center.

Oddly enough my scope produced a very similar wave to yours. I was driving it at a higher frequency but it still had very similar effects.
@ dragon

re: ambient energy
In this video, a Joule Thief run from a 1.5 V D-cell is
driving down to a auto ignition coil. The ignition coil is producing
a magnetic flux easily received by the Hubbard-like coil.
I wouldn't call this ambient ... since there is a 1.5 D-cell involved.
Hubbard, when he demonstrated his coil driving a 35 HP motor boat
likely was "tuned" to a signal sent from another coil he had
on the shoreline -- connected to 4 1200 foot antenna.
So you could call that ambient energy, but I suspect it was
VLF RF energy.

re: outer-coil, core-coil
I had 6 outer-coils wired in series ... around the circle.
I had no capacitor .. but if I add one, I can tune that part via
the capacitor. There is implicit capacitance for this coil in terms
of its self resonance. The scope's CH1 was wired to the inner
core. I have not yet wound a 3rd outer-outer coil around the entire
I realize that the 6-coils each will make the signal they receive simultaneously shift just under 180 degrees before passing it
along to the next one. 180 is nice since it supports regenerative
oscillations. So it makes sense to wire them up in a circle -- in
I would like to hear more about your experiment if you wouldn't
mind explaining it in more detail.
It is very interesting to hear the gauss increases.

NOTE: Hubbard used 8 coils around his central core ... not 6 ... but
6 allows them to be all the same diameter and is a bit less time consuming to make.
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