Homopolar generator idea

[phoneboy]

ok, i'll wip up some drawings, prob be a couple days

[seaad]

@Arne

Could you give a brief description? I don't really understand the principle.

I created a bunch of overlapping consecutive pulses that made the transistors go low (ON) one after the other in a row, (on resistance 3 - 4 ohm) instead of a brush sweeping around (a part) of the  copper disc.
Regards Arne

[F6FLT]

I created a bunch of overlapping consecutive pulses that made the transistors go low (ON) one after the other in a row, (on resistance 3 - 4 ohm) instead of a brush sweeping around (a part) of the  copper disc.
Regards Arne

It can't work because the charges have to move for Lorentz's force to operate.
If you analyze from an electrical point of view, all the points of the disc are equipotential (ground potential). Your switched circuits connect two points of equal potential, so there is no current.
I had also thought about it    . Murphy's law.

I recently thought of experiments to replace the mechanical movement of charges with a current, to make a solid-state homopolar generator from an alternating current that would simulate rotation, especially in dielectrics. I tried and failed. Nevertheless, I think this should be possible.

[shylo]

what creates the potential,  the disc spins in the magnetic field,
the field causes movement of the free electrons in the disc's molecules?
the farther apart the collection points (the stator),the greater the potential?
If you put more collection points in place does that just divide the potential, resulting in the total sum?
artv

[F6FLT]

what creates the potential,  the disc spins in the magnetic field,
the field causes movement of the free electrons in the disc's molecules?

Yes, the Lorentz force forces the electrons to move perpendicularly to their speed vector, e.g radially.

the farther apart the collection points (the stator),the greater the potential?
If you put more collection points in place does that just divide the potential, resulting in the total sum?
artv

The  potential is not the cause of the current but the effect. The Lorentz force on the electrons, therefore a current, is the cause. This force depends only on the charges, their speed and the B field. Of course if your disk is larger, with a magnet of same size, you will have more moving charges thus more current.