Brushless Homopolar N-Machine Idea ...

[CompuTutor]

OK, massive current at minimal voltage...

Making it back into magnetism seems kinda dumb...

So look at it his way for a sec.

heat.

Lotta current for a near short circuit?

Heat fits the bill.

OK, use this pic as a starting point for a sec:

http://www.overunity.com/index.php?action=dlattach;topic=8516.0;attach=40661;image

Now make both shafts thickwall metal tubes.

Send an insulated solid rod through the whole thing.
To be the bearing for the two tubes,
And hold the magnets suspended and pinned to each other.

Now we have our dipole available WITHOUT brushes
The left tube is one terminal, the right tube the other.

Now attach a three spoke wheel/ring
made of heavy conductive material
to both ends of the thickwall tubes.

Lastly attach light buss's of flat stock material
from the left ring to the right ring.

But twist then to effectively make a squirrel cage fan.

Now you have a squirrel cage fan
where the "Blades" are resistive heater material.

The two rings would have to be large enough,
and their respective tri-spokes long enough too,
to clear the cylinder in the middle that generates the current.

And NO BRUSHES...

[Low-Q]

I have thought of a brushless homopolar motor with several windings so the voltage can rise and current decrease, but havent't found a way to do it. The magnetic field will somehow go back to the oposite pole of a magnet and therfor cross the very same windings on its way back so any induction is canceled out.
The closest to brushless I can imagine is using steel ballbearings as "brushes".
Using a toroide coil which is separated in two along the circumference at both outside and inside diameter so one half are free to spin. This will probably be a pure DC generator. What do you think?

[Magluvin]

Thanks Comp
As for aluminum, I have seen aluminum wound inductors, and EV pro speakers use aluminum coils.
I was just wondering since the aluminum would be higher in res than copper, if the voltage would be greater that the copper. And maybe it would not be that much. Copper is fine.  =]

I have to run at the moment but I want to comment more on what you wrote, and thanks a lot!  =]

Magluvin

[Magluvin]

Low Q
Thats awesome, I have to run, but will be back to talk about that too.
Mags

[CompuTutor]

OK, nice start. 

At this point we have this string of contributions:

1 - CompuTutor #1
2 - angryScientist
3 - CompuTutor #2
4 - Magluvin #1
5 - CompuTutor #3
6 - CompuTutor #4
7 - Low-Q
8 - Magluvin #2
9 - Magluvin #3

However, there are also those here
that have poked around in these areas
and HAVE the ability to give feedback
as to the viability of these ideas...

They have already tested these ideas in one form or another.

Like the aluminum/copper issue.

We all know that a cylinder magnet dropped through a copper tube will fall very very slow due to the currents induced in the copper and the opposite reaction created by magnetism in the copper produced by the reaction to the action.

We also know that aluminum can produce/induce current in coils,
and will operate in the opposite manor to the homopolar generator
as the aluminum disc in that power meter on the side of or houses indicates.
An induced field causes the aluminum disc to turn...

But, as example:
Will a cylindrical magnet dropped in an aluminum tube fall slow?
Will an aluminum disc also produce like a copper disc in a homopolar?

You see, someone reading this has a magnet
and an aluminum tube as example...
That one's easy.

But spinning an aluminum disc would take a few moments to setup.





We have all read somewhere "It can" or "It can't" happen.

I'm trying with all my might to stop these answers
from being posted to this one thread.

I don't mean this out of disrespect to anyone,
but please only answer if you personally have done "It"

Or have seen it in what you believe to be an honest video.

I am re-testing all assumed answers to date,
and disgarding all passed-down assumptions.





Of course my questions still stands.

Must the outer contact point remain stationary
in relation to the spinning homopolar disc?

I see no reason why my squirrel cage heater
above (Post #5) wont work
if the edge contacts can be stationary.



-OR-
The magnet can remain stationary in relation to the spun disc.
That I have seen that done physically in a lab vid at one point.

So, can the disc stand still,
and the brushes AND magnet be spun instead?

I'm throwing that out there for fun,
but it might rule out something of interest later.