Confirming the Delayed Lenz Effect

[TinselKoala]

Thanks for the reply, although I'm not familiar with the work described or the people you've named above. I'll have to do some research.

Cheers

There is some good information here, in Jeffery's article in Analog:
http://www.analogsf.com/0806/altview.shtml
In the Marinov Slab motor, the special "secret" winding of the coils simulates the current paths in the original "ring stator" of the Siberian Coilu/Warlock's Wheel. Since the moving ring stator and the magnet armature both accelerate in the _same direction_ in the Warlock's Wheel, and this same effect occurs with the fixed stator coils in the Slab (although masked by the "immobility" of the frame) ... one may be tempted to imagine a violation of Newton's Third Law of Motion (N3L). The armature accelerates in one direction .... but there isn't an opposite back reaction against the stator. Apparently.

[hoptoad]

There is some good information here, in Jeffery's article in Analog:
http://www.analogsf.com/0806/altview.shtml
In the Marinov Slab motor, the special "secret" winding of the coils simulates the current paths in the original "ring stator" of the Siberian Coilu/Warlock's Wheel. Since the moving ring stator and the magnet armature both accelerate in the _same direction_ in the Warlock's Wheel, and this same effect occurs with the fixed stator coils in the Slab (although masked by the "immobility" of the frame) ... one may be tempted to imagine a violation of Newton's Third Law of Motion (N3L). The armature accelerates in one direction .... but there isn't an opposite back reaction against the stator. Apparently.

Thanks again. Cheers

[Farmhand]

Hi Conrad,

Very good tests, they show the importance of AmperTurns by using drive coils with very high number of turns. Of course this increases AC impedance but it seems the tradeoff is still on the positive side when comparing rpm and power draw with lower impedance coils. 

Yes the drive circuit shown by DadHAv is interesting, I have not seen it, it is worth testing.

I will be away for some days and return about May 2.

Keep up the good work.

Greetings,
Gyula

Hi Gyula, I know ampere turns are important but we must respect the frequency current restriction of the coil.
For instance if the coil has too much inductance it can't pass much current in very short pulses, which means longer "on" times which ultimately restricts the frequency the coils can be switched at as well as the current. I think we need to be smart and work out how much inductance is too much by calculating the intended switching frequency of the coil.
As well in my humble opinion I believe as low a resistance coil as possible is best as long as it has as much inductance as possible (turns) this way we can use capacitor discharge methods as I showed in my last post to get as short as possible "on time" and the fastest rate of rise of current in the drive coil.
With the resonant charging circuit (with "de-q-ing" diode) the increased voltage cannot return to the supply and because of the added inductance of the charging inductor the drive coil mainly gets the energy in the supply discharge capacitor and not much current through from the supply, especially when on times are small. In order to get very high frequencies from a (pseudo synchronous motor) the drive coils must be able to pass enough current in short pulses.

I just tried going from using three strands in parallel of 0.5 mm wire about 7.3 mH each I think all three together had just over 1 Ohm resistance to using two in series that had just over 6 Ohms resistance and I guess about 14 mH inductance. The result was the two in series restricted the current so much the motor wouldn't run fast even with the increased voltage in the supply discharge capacitor. The way my coil and rotor magnets are arranged the magnets only just attract to the core. With the rotor I have it can spin the shaft rotor and a squirrel cage from a fan motor for flywheel weight up to 1300 rpm with just about 250 mA from the 12 volt battery and I only have two magnets on a 140 mm rotor it should have three or four magnets, which would increase the frequency more, even though the frequency is only quite low, even at 1800 rpm the frequency with two magnets is only 60 Hz. The inductance we want, but the resistance is debatable in my opinion. I'll be going the route of higher voltages to the drive coil and short "on" times, a variable voltage supply is the way to go, I'll use a boost converter to vary the input voltage and a resonant charging circuit to provide a capacitor discharge at a further increased voltage. I like the difference in sound the charging circuit has made now the setup purrs.

Last night I setup the adjustable timing mount for the optical sensor so I can advance and retard the timing now. I hope to wind a new drive coil tonight I think I might wind either a nice neat coil from 0.7 wire or just use some twisted stuff I have which is four strands of 0.5 mm wire and longer than the one I'm using now. My inclination is to wind the drive coil very neatly so as to get as many turns as possible as close to the core as possible. But with twisted wire the coil ends up much bigger than a neatly wound one because of the air gaps.

Cheers

[skycollection]

I AM NOT USING THE PATENTED CONFIGURATION OF NIKOLA TESLA  THEREFORE THERE IS NOTHING TO CLAIM...! I NEVER USED INFORMATION FROM ANYBODY, I DON´T UNDERSTAND IN ENGLISH.

[conradelektro]

Conrad, Have you tried using a charging circuit in your arrangements ?
Like the setup Tesla shows in the "Electrical Igniter for Gas Engines" patent http://www.google.com/patents?id=iAVhAAAAEBAJ&pg=PA1&source=gbs_selected_pages&cad=1#v=onepage&q&f=false

They see use in Tesla coil primary circuits ect.

I put one on the input to my motor and got good results from it, the drawing shows my exact setup, and the scope shots show the results.

I was able to get up to almost 19 volts in the 200 uF supply cap to discharge through the motor coil.
It seems that cap gets fully discharged and recharged to 19 in fairly quick time.
Anyway I get better performance with less input power and the drive coil gets a capacitive discharge from 18 or so volts, more bang ! .
As the frequency gets higher the voltage also rises in the supply discharge cap.

The charging inductor can also restrict current because of it's inductance and it exerts a force with it's core as well but if that can be used while retaining the effect is another question. 

Cheers

P.S. Maybe a wave form from the charging inductor itself might be interesting, i'll get one. 

Edit: Inductor current is taken across a 0.1 ohm resistor between the supply and the inductor, the inductor voltage was probed between the diode and the inductor.

I did use the back EMF from the drive coil to charge a cap/accumulator or to light some LEDs in some of my pulse motors, but the "charging inductor" is news for me and I will test it. Thank you for the scope shots.

At the moment I am redesigning my ring magnet spinners with a slab of Teflon (just having a hole for the axle) instead of a ball bearing.

Greetings, Conrad