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Tinman's Rotary Transformer
#1
I want to start a topic regarding Tinman's Rotary Transformer.  If you are not familiar, here are 3 videos.  There are also some more about the build in his youtube videos.    

https://www.youtube.com/watch?v=FSsmScZqMts
https://www.youtube.com/watch?v=xmJr4_gHygo&t=89s
https://www.youtube.com/watch?v=fpcqMPvcoW0&t=131s

--->  more in Tinmans Videos from years ago.  https://www.youtube.com/@69Atho/videos

I recently made a version with a shop-vac motor. My output is nowhere near his...  

If you are unfamiliar, the story is-  This caught the attention of the people we want to stay off the radar with. And the project went on the down-low.  

From what I verified on the bench is:

-  If we cut the field coils on a universal motor so it's just a rotor spinning against the core- the motor absolutely still spins.

- The field coils can now be used as Pickup Coils and they do generate a current.

- Pulling power from the field coils can and does speed the motor up when the coils are hooked up right.

-  I have also seen some degree of input current lowering when connecting a load. But not as much as the video shows.

All in all, if someone is looking to get involved in a project- this is an excellent one to start.  There are thousands of ideas that should be tried with this and the parts are very easy to get and free.  Any old washing machine, Vacuum cleaner, etc will most likely have a universal motor you can take out.  So easy to garbage pick.
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#2
Could you explain the circuit board that tin man was using and why? He's hard to follow, is he powering the device with direct current or pulse width modulation?
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#3
(06-01-2024, 08:16 AM)Uniongarage Wrote: Could you explain the circuit board that tin man was using and why? He's hard to follow, is he powering the device with direct current or pulse width modulation?

The info is scattered.  And I am sure it is not all presented.  I have spent dozens of hours going through the following threads:

-  Note: you will need to login with the credentials posted at the header to see images etc.

https://overunity.com/13777/tinmans-rota...former/30/
https://overunity.com/15901/tinman-gener...-topic/45/
https://overunity.com/16030/tinmans-coil...ircuit/75/

There is lots of hints within those pages, such as "tipping the brushes", shorting 1 coil, why it may not be easy to loop, possible magnet drilled into the core, etc.

There is also hints within other older videos on his Youtube channel. Such as this tutorial "how to drill a hole in a laminated core-  
https://www.youtube.com/watch?v=u3nWWtmPq6I

Honestly, I do not have a proficient model to suggest I got it anywhere near correct.  

If someone is looking for a project to invest building and experimenting time, this is an excellent one which obviously has potential.
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#4
So while working on other projects, I clearly see the operational angle of the RT and why this project can be spectacular.  

It is basically the same concept I was working on with 2 other projects but this RT method makes it Much Easier to build.  

With my eyes open now, I see some important parts that I did not see before on my first experimental model.  

Get ready for some cool results soon!
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#5
Cool to hear you are working on this. Have heard of this projects through the years but still not really sure what is happening. Sounds like I may get there with your help as you explain your further developments.
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#6
(06-27-2024, 03:03 AM)MagnaProp Wrote: Cool to hear you are working on this. Have heard of this projects through the years but still not really sure what is happening. Sounds like I may get there with your help as you explain your further developments.

Sweet, I can explain it.  Problem is,  when someone explains it all in 1 shot- no one reads it or comprehends it.

Point #1..  The way textbooks and the internet explain the workings of a universal motor are confusing and possibly down-right wrong.

First thing to understand is when we put DC into the brushes, the armature creates a magnetic field that is rather "Stationary".  It does not rotate at all.  

   

If the armature does get rotated, the magnetic domains of the individual laminations change, but the overall field in the space around the armature does NOT really move..  

Without understanding this-  the rest will make no sense.  So this must be understood first.  The armature creates a static field in space with individual laminations that are switching magnetic domains.  

If we understand this- I will continue.  But if no one really cares, I will just continue and post results when I got them to show.  

I fully understand that no one wants to listen and learn from someone who does not yet have an effect to show.  Same with myself..  When people try to teach with no results to demonstrate, I just tune out quickly, so I don't blame anyone here..

But I will most certainly be showing some effects here very soon
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#7
BEHOLD...  You can see exactly what I stated above in this simple video demonstration I just recorded.




Now remember that effect and add our 2 stationary field magnets..  What happens?  

   

A constant rotational torque is applied to the rotor..  The rotor will attempt to align with the field magnets but can never align.  


This is how a universal motor truly works.  The rotor is always trying to align with the field magnets, but the commutator and brush keep the magnetic field of the stator stationary in space, so the rotor can NEVER align.  

It is CRUCIAL to understand this before trying to decode the rotary transformer or modifications that need to happen.
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#8
Partial Quote...
(06-27-2024, 08:12 AM)Jim Mac Wrote: ...First thing to understand is when we put DC into the brushes, the armature creates a magnetic field that is rather "Stationary".  It does not rotate at all.  

...If the armature does get rotated, the magnetic domains of the individual laminations change, but the overall field in the space around the armature does NOT really move..  

...Now remember that effect and add our 2 stationary field magnets..  What happens?  

...A constant rotational torque is applied to the rotor..  The rotor will attempt to align with the field magnets but can never align... 

Thanks to your explanation and video demo Jim Mac, I understand that part perfectly now. Thank you for taking the time to do that for me.
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#9
(06-27-2024, 04:06 PM)MagnaProp Wrote: Thanks to your explanation and video demo Jim Mac, I understand that part perfectly now. Thank you for taking the time to do that for me.

No problem..  So moving on...

The armature has "grooves" and "Plateaus".  

   

Each one is polarized a little differently from the next.  And when they rotate, the magnetic domain of these "Plateaus" change polarity..  They actually Change Polarity as they rotate!

These magnetized plateaus can induce a coil as they rotate.  So now it's time to put on the thinking cap...  How can this be manipulated?

Think about how a regular magnet rotor works and how Lenz Drag manifests.  Then think what's different about this setup.

Hint-  we now have the ability to move the induction coil to any point around the armature.  

I am going to pause there till I have a demo to show. But feel free to chime in if something pops out or you have  an epiphany.
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