Confirming the Delayed Lenz Effect

[synchro1]

@Farmhand,

                   Jorge's a bit slippery alright. I can't vouch for any of his flimsy claims. I like the polished quality of his videos. Here's what he had to add to the youtube comments on his COP 1.79 OU video two:

Skycollection,

"Yes, input watts is 12 volts x 0.53 = 6.36 watts and output watts 52 volts x 0.22 = 11.44 watts. thanks for watching".

[MileHigh]

For Jorge's new clips, there simply is no logical reason for using toroidal coils that I can think of.  In theory, you are supposed to try to reason things like this out in your mind before even building something.  Just pure trial-and-error building is not where you want to be.  You want to apply your knowledge when you undertake to build something.  Except for the unremarkable Steorn "disappearing core" pulse motors that were demoed at the Waterways presentation, I can't think of a single logical application for using a toroidal coil in a pulse motor.

[Magluvin]

For Jorge's new clips, there simply is no logical reason for using toroidal coils that I can think of.  In theory, you are supposed to try to reason things like this out in your mind before even building something.  Just pure trial-and-error building is not where you want to be.  You want to apply your knowledge when you undertake to build something.  Except for the unremarkable Steorn "disappearing core" pulse motors that were demoed at the Waterways presentation, I can't think of a single logical application for using a toroidal coil in a pulse motor.

"I can't think of a single logical application for using a toroidal coil in a pulse motor."

I can.     
http://www.youtube.com/watch?v=FrtGzxOKpwQ

And the first solid state orbo, The Orbonbon. 

http://www.youtube.com/watch?v=KSgGFzfDiYE


The dime size orbo was not very efficient as it produced more heat than rotation. But all that can be remedied by using a larger core for more attraction and more turns of finer wire. And the rotor will run faster.  I just thought it was a novel idea to demonstrate the tiny toroid working.

Attraction to the cores to provide rotor motion is not really different than a core of a 'universal motor' if the path of the magnet is set up as a loop like a normal motor. The 'disappearing core' is not a joke in any manner. TK's Orbette worked well also. And all could be better if the designs were developed to do better.  The Orbo coil/core demonstrates a very useful magnetic field switching device, and I think it has been demonstrated fairly well, for what has been done so far. Might not seem like much if you have not built one, but when comparing with other experiments, it has its merits.

Mags

[Farmhand]

I made my Version 1 of the ring magnet spinner a bit more sturdy. The flimsy and rattling ball bearings were replace with Teflon slab which just have a hole for the axle.

I think I can still tweak it a bit and the Hall sensor has to go underneath the ring magnet because I want to place a "magic generator coil" on top.

The most useful setting seems to be 12V which results in about 3000 rpm for 0.5 Watt.

The most difficult part is the mechanical precision which is till bad in my Version 1 and still worse in my Version 2, see my Reply #1239 on: April 26, 2013, 09:46:35 PM-

Version 1 was better with the rattling ball bearings, see my Reply #1243 on: April 26, 2013, 10:25:47 PM.

Greetings, Conrad

Hi Conrad, Yes I agree with these setups we want very low mechanical drag as well as low windage. My rotor pushes a lot of air, in a similar way to a Tesla turbine, the disc throws off air all round and quite strong too. Other things that reduce the possible speed are rotor not balanced ( mine needs a re-balance ), misaligned bearings ( with my wooden frame I can manipulate it to align the bearings while running for least drag, but the next setup will be built more precisely and with some adjustment on one side for bearing alignment, also flexible coil mounts can "give" when the coil repulses the magnet and vibrate, in some cases that could actually aid in rotation of the rotor but would ultimately cause vibration in the whole setup and if a vibration can aid, it can hinder as well. Unwanted vibration is why in my opinion opposing forces are best and why I need to make a second set of coils for the opposite side of the rotor more coils will mean better efficiency and more torque as well.  Because of my larger rotor my magnet speed is about 15 meters a second at 2400 rpm if my calculation is correct. But the frequency is low 80 Hz. The magnets are at 120 mm diameter.

My motor coil is actually more like 12.8 mH so with the 330 uF it's resonant frequency is more like 77 Hz which is 2310 rpm, so with a second set of coils it should be most efficient
at 2310 rpm or so and develop the most torque at a speed just below 2300 rpm. I think if I was to run the motor at increasingly faster speeds over it's resonant speed, the input would rise a lot for little speed increase.

Conrad I see you are using square wave AC to drive the spinner ( H bridge ), that's then actually a "permanent magnet AC motor" not really a pulse motor if there is not an appreciable time break between input voltage alternations and no coil discharges or harnessing of the energy released when the magnetic field of the coils collapse. No big deal, just my opinion but to be a pulse motor the duty needs to be less than 100 % regardless if AC or DC is used. My duty is about 40 % or less. With lower resistance and slightly less inductance or higher voltage input it could be less.

Last night I re-familiarized myself with the picaxe program and it's input and output configuration so I can setup the boost converter for control of the input voltage I should be able to get up to 30 volts input so the voltage in the capacitor to dump through the drive coil could get to 50 or 60 volts then which will help to overcome resistance and shorten the pulse width.

Cheers

P.S. I quickly wound a test generator coil of about 70 mH and it produces about 20 volts.

Oh and I can run the setup with up to 0.8 or 0.9 A input current from the 12 volt battery and the mosfets don't even get warm.


..

[Magluvin]

And the first solid state orbo, The Orbonbon. 

http://www.youtube.com/watch?v=KSgGFzfDiYE

Also, in case it wasnt noticed, at 2:50 in the vid I insert a diode in the circuit that captures the collapse of the toroid coil and it is added to the output. And this collapse is not altered by the pickup coil loaded or not, nor does the pickup loaded or not affect the input to the toroid coil. So if the pulse freq and PW is proper for the toroid, as it is still an inductor, we can collect a lot back that was used, and the rotor will still run the same. 

Mags