Minimal Lenz Generator V2

[gyulasun]

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As I said earlier my motor is too large to determine if the added washers are reducing or delaying the Lenz effect.  A new test set up either with bigger or more coils or a much smaller motor needs to be done to determine the effect the washers are having on the Lenz effect.

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Hi Carroll, 

Thank you again for sharing your new measurents on this interesting setup.   

Would like to suggest a small modification on your rotor disk.  When you have time, you may wish to mount and embed further two magnets 
into the rotor, these would serve as rotor magnets for a small pulse motor, see the attached picture with my indicating the magnet places. 
And you would have room for two small stator motor coils to mount them on a vertical wood support fastened on the base platform. 
This way you could get rid of the scooter motor and would be able to sense any load behaviour on the generator side by monitoring the pulse motor input current.
The simplest pulse motor with one transistor controlled by a reed switch or a Hall sensor would serve well. The 2 motor coils would simply be in series and a fast diode would shunt both (or individually) for the flyback pulse to maintain motor coil current  a little after the switch-off moments.  Obviously such simple pulse motor could not provide high RPM for the rotor but would serve well for detecting any load change.
You could position the two motor magnets very close to the edges of the rotor disk alongside the diameter line (instead of the middle
I indicated), that would insure higher motor torque if that would be important.  I apologize for giving you such suggestion from my 'armchair', I thought it mentioning at least for your consideration.   

Regards
Gyula

[citfta]

Hello again Gyula,


I don't mind at all you suggesting ideas for further research.  I do think that might be a good way to explore this a little further.  Unfortunately I have several outdoor projects that I really need to get done so my time for working on this will be limited.  It does get too hot a lot of times in the afternoon to work outdoors so I probably will have some time each day to rebuild this into a pulse motor for further testing.  But it will probably take me a few days to get it done.


Thanks for the suggestion.


Take care,
Carroll

[norman6538]

My simple suggestion is to use a pendulum instead of a rotor and count the swings when dropped from the same point once for the washer enhancement and once for standard setup. Then you will see if there is less Lenz counter to the direction of the motion......

If nothing comes  out by next week I might have time to do that.
IRS comes first - 15th is coming.

Norman

[bistander]

First thing comes to mind is the pendulum swings both ways, so as citfta does, magnet encounters coil first, then iron washer, then on back swing, iron first, then magnet. Be interesting to see difference. I thought about suggesting citfta test running opposite direction of rotation. See if those numbers shed any insight.

I also noticed that first post original drawing has split rotor with iron going past rear end of coil core. I don't see the value for it. And as long as there is the rotor structure there, better off to use a magnet on it.

BTW, I think you could emulate a smaller (weaker) motor by shifting the brush holder end cap position and reducing motor voltage. Advancing brush timing weakens the motor field causing less torque per amp and higher RPM per volt. Just a thought. Might be quicker than adding magnets to make a pulse motor.
Regards,
bi

[gyulasun]

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I also noticed that first post original drawing has split rotor with iron going past rear end of coil core. I don't see the value for it. And as long as there is the rotor structure there, better off to use a magnet on it.
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Hi Bistander, 

Do you mean to use a magnet on the split rotor instead of the iron piece?  I think you meant the iron on the bottom rotor disk in Boris's drawing, right?   

Gyula