Confirming the Delayed Lenz Effect

[hoptoad]

Yes that makes perfect sense. Also the frequency seems to be very low for the coil size/inductance, so the self capacitance compared to a single coil of similar inductance
must be much more even at 360 pF. And theoretically as the supply voltage increases if the capacitance does increase with it then the resonant frequency should drop further.

That was for a multi layered solenoid with an iron powder core. Which is covered by Tesla's Patent "COIL FOR ELECTRO MAGNETS".

I happen to have a very similar coil but with only one winding with very nearly the same inductance 264 uH, i'll determine it's self capacitance and see what gives, gotta find it first.

Cheers

P.S. In case no one noticed my accelerating under load generator coil had a long core and "C" shaped, the core ends were the length of the coil or more away from
the ends of the coil. Which might have helped the effect in my case due to magnetization delay. As per Tesla's other patent.

http://www.google.com/patents?id=uwhBAAAAEBAJ&pg=PA1&source=gbs_selected_pages&cad=1#v=onepage&q&f=false

...

Since capacitive reactance decreases with frequency (rpm), then the role of a coil's self capacitance lessens with respect to current / mmf phase shifting as frequency or rpm increases.

Most experimenters scope shots always seem to indicate a lagging coil current when heavily loaded, as opposed to a leading coil current.
This is what one would expect when the induction is much greater than the capacitance as is generally the case with coils. Especially coils with ferromagnetic / metal cores.

Therefore, it seems probable that only the inductance and resistance need to be considered with regard to coil current and mmf delays that result in AUL.

Cheers

[Farmhand]

OK so a regular multi layered single winding solenoid of 261 uH on an iron powder core has a resonant frequency of over 3.3 MHz.
Which would indicate a self capacitance of only about 8 or 9 pF. When compared to 360 pF there is a big difference. About 3 MHz difference.

The 261 uH coil in this test has less than 1 Ohm resistance, the wire size is 1 mm as well, same as the others.

If the coil has more capacitance then the resonant frequency is lowered, that's the point.

Cheers

[hoptoad]

OK so a regular multi layered single winding solenoid of 261 uH on an iron powder core has a resonant frequency of over 3.3 MHz.
Which would indicate a self capacitance of only about 8 or 9 pF. When compared to 360 pF there is a big difference. About 3 MHz difference.

If the coil has more capacitance then the resonant frequency is lowered, that's the point.

Cheers

I understand, and it likely has a great deal of relevance to high frequency solid state devices. It also imparts a high relevance to the discharge time of a coil via regenerative feedback circuits, not only because it changes the coil's time discharge constant, but because there is more energy "stored" in the coil's field, as explained by Tesla.

My opinions are only relating to AUL in motor / generator setups. Frequencies are low, generally in the region of 1 - 1000 hz and rarely (if ever) more than that.

Cheers

[synchro1]

PDF of Tesla's Electromagnetic motor: This is an a.c. attraction motor with an iron magnetic rotor. The core lag advances the rotation of the rotor.

Either a.c. polarity charge generates an attraction field in the electromagnetic motor coils. Pulsed d.c. would work just as well. One silmultaneous d.c. pulse through the four coils, would generate two out of phase and two silmultaneous attraction events in the coils and make the iron rotor spin.

This motor can easily be redesigned to run on pulsed d.c. to propel a magnet rotor. The a.c. current creates an attraction field for the iron rotor regardless of polarity, so pulsed d.c. would power the motor the same way and also drive a magnet rotor in repulsion. A rotating magnetic field should develop naturally with no additional circuitry.

Here the challenge is to drive a repulsion magnet rotor with Tesla's magnetic lag field rotation from the long core output coils.

The long core magnetic lag coils should generate an out of phase rotary repulsion from the output under load counter-field, just like the induced power pulse from the delayed magnetic field in the original. The two short core coils at 180 degrees could be counter wound to deliver a silmultaneous repulsion pulse to a diametric rotor at TDC, and then the 90 degree magnetic lag phase long core output coils would generate an a.c. current and deliver an independent "Lenz Delayed" repulsion pulse of their own that's correctly timed. The motor can run the same way as a monopole too. This simple engineering innovation is probably in advance of anything currently under development. Slightly oversized long cores can allow the output coils to easily slide along their cores to their correct, rotor speed up positions.

So now we create a rotating magnetic field with help of the output coil Lenz delay. This design should at least run at unity, like my spiral coil spinners. Maybe four more mid-sized long core output coils at 45 degrees would help add to the motor alternator's efficiency.

[ALVARO_CS]

@hoptoad
this recent posts reminds me the long core rods I used in an Adams type motor, but the other way around. That is: sliding an output coil at the tail of a long driving coil rod.
I know it is a very different concept, as the output coil was energized by the motor pulse, but anyway, I noticed that loading this collector coil, no additional drag nor lenz observed, neither a rotation decrease.
The long core, in fact produced stronger thrusts than a short one and thus faster rotor rpm.
By the way, thanks so much for those totallydamped pages, I constantly use a lot the N19 schematic with excellent results.
cheers