PhysicsProf Steven E. Jones circuit shows 8x overunity ?

[Jack Noskills]

I saw a guy making tests with bifilar and normal coils in some youtube video, he put same DC through and used it as a magnet to collect paperclips. Bifilar wound got two times more paper clips than normal wound coil.

I read somewhere that tinned or silver coated wire gives three times the magnetic field compared to plain copper wire. If you have such a wire then perhaps you could see if you these add up. Make bifilar coil with such a wire and see if you get better results.

And if yo have Litz wire it would be interesting to see how 3d bifilar windings using that would work. You can make kind of winds with Litz, converting vortex, expanding vortex, converting and expanding at the same time. Lots of possibilities to explore with 3d bifilar.

[JouleSeeker]

I saw a guy making tests with bifilar and normal coils in some youtube video, he put same DC through and used it as a magnet to collect paperclips. Bifilar wound got two times more paper clips than normal wound coil.

I read somewhere that tinned or silver coated wire gives three times the magnetic field compared to plain copper wire. If you have such a wire then perhaps you could see if you these add up. Make bifilar coil with such a wire and see if you get better results.

And if yo have Litz wire it would be interesting to see how 3d bifilar windings using that would work. You can make kind of winds with Litz, converting vortex, expanding vortex, converting and expanding at the same time. Lots of possibilities to explore with 3d bifilar.

That result on YT sounds consistent with what I observed -- depending on the current he used, Jack.  Thanks -- and if someone finds the url for this vid, pls let us know.
I agree that tests with different kinds of wire would be great!

[jbignes5]

 I did not want to make you do things that you do not see relevant. The core issue was due to fact that any small eddies tend to mess up the works.

When you have two coils in series there will be and interaction between the two. The regular coil acts like a choke and starves the bifilar coil of it's amperage.

With the tests of the two different coils the bifilar coil will do more magnetically because the coil itself rejects the Magnetic lines better and forces more into the core. The regular coil has a normal field both inside and outside of the coil.

If we look at the structure of the magnetic field there are two distinct fields at play. One being the electric and the other traditionally called the Heavy magnetic or magnetic field lines. These magnetic field lines are dependent on the electric field to hold them away from the source of the electric field and usually are 90 degrees out of phase so to speak. The electric field lines are 90 degrees from the wires plane and go outwards radially but the magnetic field lines are parallel to the wire and seem to ride the electric field lines in an cymatic fashion.

When you use electricity no matter if it is ac or dc these two fields form with dc being a steady state field and ac being much more dynamic and full of resistance to the flow. But when you learn how to separate the two fields it amplifies both field lines density and you get an increase in the field strength of the two but using a core that is not circular allows both fields to mix again and you have a lessening of the filed strengths.

I'm sorry to say this but you can not have one field without the other but if you learn how to channel one completely away from the other they both seem to get stronger.

As in our electronics current follows the voltage and in magnetic fields the magnetic field lines always come after the electric field lines. It seems to me that the magnetic field lines are a response of the environment to the electric field lines. When we pump more current into the electric field it of course strengthens the magnetic lines trough the electric field.
Example given: http://hyperphysics.phy-astr.gsu.edu/hbase/electric/equipot.html
This is how we teach the premise currently and I have to agree with the results because it makes sense.

This is also what we are seeing in a round about way of the field around a wire: http://hyperphysics.phy-astr.gsu.edu/hbase/electric/elecyl.html#c1

The Gaussian surface is what the magnetic field lines would be. This example, the Gaussian surface is where the current develops and is transferred not via the wire itself.

[Hope]

I agree that silver tinned copper wire would be a interesting test.  In Walter Russell's harmonic periodic chart of elements they are harmonic opposites.

[JimU]

  I tried variations, reversing the current direction, changing the order in which the coils were connected (always in series), changing the current -- consistently the same result:
THE BIFILAR-WOUND COIL GIVES HIGHER B-FIELD READINGS THAN SINGLE-WOUND COIL.

I had two different pairs (4 coils total), and the second pair gave the same conclusion and approximately the same numbers on the Hall-probe readings (within roughly 8% measurement error-bar).  I learned as I went along that changing the angle of the probe with respect to the coil axis and with respect to North made some difference; and this may account for the estimated 8% measurement error-bar (1 sigma; approximate). 

In the proposed follow-up experiment, I would fix the angles of a calibrated Gaussmeter and the coil, with respect to North, and that should reduce measurement error to less than 8%.

The tests shown above are with the coils wound CW (clock-wise, as the winding proceeded away from the starting point.) The attached test shows the result when I re-wound one of the single-wound coils, so that it is in the CCW sense, whereas the bifilar wound coil remains in the CW sense, and the current was set at 2.0 Amps.

Recalling that the ambient field reading is 1.0 mV (see above), we have:
B-bifilar ~ 1.8 mV - 1.0 mV = 0.8 mV
B-single ~ 0.6 mV - 1.0 mV = -0.4 mV.

Note that the B-field in the CCW coil is reversed from that of the CW coil, as expected; again we have the result:
THE BIFILAR-WOUND COIL GIVES HIGHER B-FIELD READINGS THAN SINGLE-WOUND COIL.

Furthermore,
THE HIGHER THE CURRENT, THE LARGER THE DIFFERENCE BETWEEN BIFILAR AND SINGLE-WOUND FIELDS,

although this conclusion is tentative since it is based on only two currents, 2.0 and 3.0 Amps DC.

Comments are welcomed.  Whew!  lots of fun!   Makes me wonder if ou can better be achieved using bifilar-wound coils.  IIRC, this type of winding originated with Tesla.

Hi Dr. Jones,

      My take on this, FWIW, and I wrote this up earlier, is that the bifilar coil has
higher capacitance and therefore holds more charge at a give voltage drop
across it.   When current is flowing, there are then more electrons in that
coil than the standard-wound one.  The solenoid magnetic field is produced
by the electrons moving around the coil.  Even though the current is the
same in both coils (electrons flowing in or out per second), there are more
electrons packed into the bifilar coil and thus moving around the bifilar coil
windings producing therefore a higher magnetic field.  So, Q=CV means
more charge in the coil, and the standard B=uNi/L is not an accurate formula
when capacitance differences arise.  Larger currents means a larger voltage
drop across each coil, thus packing relatively more charge into each, the
bifilar growing more.  Presumably this would lead to your observation of
the ratio of difference in the magnetic fields growing for larger currents.
Of course, I should calculate all this to see if this theory matches the results!

      Regards,     Jim