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Author Topic: Homopolar generator idea  (Read 5499 times)

Offline Antiproduct

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Homopolar generator idea
« on: October 01, 2018, 09:55:41 PM »
Aspiring inventor here, of sorts. I have some questions. Posted this on another site but I think the forums are dead.

So, I was reading about this stuff. www dot dtic dot mil/dtic/tr/fulltext/u2/a094910.pdf

That with a switching mechanism, current could be directed from the disk into a primary winding, which would, using a switch, interrupt its own current over and over, creating a high voltage spike in a secondary winding.

What I'd like to know is, would it be practical to use a high voltage "voltage multiplier" (cockcroft-walton) to get static DC from the high voltage pulses? Would I need custom diodes and capacitors in order to achieve this? I'm thinking of using the biefeld-brown effect since the pulses will be over 50 kV, and I can use asymetrical capacitors pulsed with over 50 kv to generator thrust with each pulse in the direction of rotation.

This would be a Faraday disk generator that doesn't require brushes and generates it's own high voltage. Self excited. I am not the only one to think of this but I'm considering using the static DC to supply voltage/current from tungsten rods connected to the disk, in the form of a spark gap. So instead of brushes, it uses plasma contacts. There would need to be a timer probably, because it would generate a lot of heat. so it could only be static for so long, then switched off to cool down, and allow another Faraday Disk generator to take it's place. Suggestions?

Was also wondering if it would be possible to use the static DC generated from the multiplier and pulses to charge the Faraday disk itself. As in, have two disks, one positive and one negative.

Free Energy | searching for free energy and discussing free energy

Homopolar generator idea
« on: October 01, 2018, 09:55:41 PM »

Offline seaad

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Re: Homopolar generator idea
« Reply #1 on: February 21, 2019, 11:47:46 AM »
From Science Exxience at YouTube you can learn a lot!

See the films Exx-001 to Exx-019

https://www.youtube.com/watch?v=j19XAN7io4c

Regards Arne

Offline seaad

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Re: Homopolar generator idea
« Reply #2 on: February 26, 2019, 07:15:28 PM »
This is also a working variant.

Regards Arne

Free Energy | searching for free energy and discussing free energy

Re: Homopolar generator idea
« Reply #2 on: February 26, 2019, 07:15:28 PM »
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Offline F6FLT

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Re: Homopolar generator idea
« Reply #3 on: February 27, 2019, 07:42:18 PM »
From Science Exxience at YouTube you can learn a lot!

See the films Exx-001 to Exx-019

https://www.youtube.com/watch?v=j19XAN7io4c

Regards Arne

I believe it (voltage on the axle).
You could be interested in this related setup.
Pdf here.
Your setup is twice that one, provided that your axle is ferromagnetic.
For me, it's no more the Faraday disk principle.
It would be interesting to replace the axle with a non-ferromagnetic one, for instance aluminium. The effect should disappear or becoming very weak.


Offline seaad

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Re: Homopolar generator idea
« Reply #4 on: February 28, 2019, 12:05:50 AM »
A quick test at the same speed.
Axis; a thin hollow brass.
In my post above. The voltage across was about 8 - 9 mV.

Regards Arne

Free Energy | searching for free energy and discussing free energy

Re: Homopolar generator idea
« Reply #4 on: February 28, 2019, 12:05:50 AM »
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Offline F6FLT

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Re: Homopolar generator idea
« Reply #5 on: February 28, 2019, 11:44:21 AM »
Hi Arne,

Could you try this, in both configuration with a ferromagnetic axle and non ferromagnetic?

Offline seaad

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Re: Homopolar generator idea
« Reply #6 on: February 28, 2019, 02:40:21 PM »
Hi Arne,

Could you try this, in both configuration with a ferromagnetic axle and non ferromagnetic?

Hi  With the "naked" brass axle and the same speed as before and a distanse between the meas. points about 2 cm (=.8 ")  only 0.1 mV
     With a  soft Fe rod inserted inside the brass tube, that gave 0.4 mV
     Not much to put in a christmas tree!

Regards Arne

Free Energy | searching for free energy and discussing free energy

Re: Homopolar generator idea
« Reply #6 on: February 28, 2019, 02:40:21 PM »
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Offline F6FLT

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Re: Homopolar generator idea
« Reply #7 on: February 28, 2019, 06:59:24 PM »
Hi  With the "naked" brass axle and the same speed as before and a distanse between the meas. points about 2 cm (=.8 ")  only 0.1 mV
     With a  soft Fe rod inserted inside the brass tube, that gave 0.4 mV
     Not much to put in a christmas tree!

Regards Arne

It's strange, because on my side I easily reach 100 mV between my 2 sliding contacts on the ferromagnetic axis, in front of the two ferrite magnets recovered from a microwave oven. With an aluminium axle, the voltage is too weak to be measured

The largest magnet diameter, the better the effect. A much stronger neodynium magnet but with half the diameter gives weaker voltage. That's why I think that the magnetic field gradient plays an important role.

It is important that both contacts are on the same side of the magnet, one as close as possible and the other further away.
The difference with my setup is that in yours the magnet rotates, not in mine. But this should not change anything.



Offline seaad

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Re: Homopolar generator idea
« Reply #8 on: February 28, 2019, 07:35:18 PM »
Hi F6FLT
You can use my readings as a rough comparison to different set ups. I only used 2 Volt to my motor here. But feeded with maximum 12V  it produced about 30 - 35 mV at my first test with two magnets. 8 -9-mV with 2 Volt to the motor.
I'm sorry I don't have any wider magnets at home to make some comparison tests.

https://www.youtube.com/watch?v=gduYoT9sMaE

Regards Arne

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Re: Homopolar generator idea
« Reply #8 on: February 28, 2019, 07:35:18 PM »
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Offline F6FLT

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Re: Homopolar generator idea
« Reply #9 on: March 01, 2019, 10:24:54 AM »
Hi Seaad

After seeing the video, I think it is the angular velocity that makes the difference in the amplitude of our voltages. My motor seems to run much faster.

On the principle, there is no paradox, it's only a misinterpretation of relativity that leads us to say that the result should be different depending on whether the magnet rotates or not.

Relativity is not between the circuit and the magnet, but between the two parts of the circuit, which rotate relative to each other in a magnetic field.
Each half-circuit between the two sliding contacts sees the other rotate. So the charges of one half-circuit see the charges of the other half-circuit subjected to the Lorentz force F=q.VxB, when they see themselves at rest (F=0). This creates the imbalance of forces and therefore the current. This is why turning the disc OR turning the sliding contacts is the same.

A magnetic field is only a set of vectors assigned to point positions in space. As the magnet rotates around its axis of magnetic symmetry, the vector field remains the same. B is constant and the same whether the magnet rotates or not.
« Last Edit: March 01, 2019, 03:49:07 PM by F6FLT »

Offline shylo

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Re: Homopolar generator idea
« Reply #10 on: March 01, 2019, 10:54:39 AM »
In the video what would be the result if you spin the stator and magnet?
One in both the same direction, the other in opposite directions?
I would think the voltage would double.
artv

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Re: Homopolar generator idea
« Reply #10 on: March 01, 2019, 10:54:39 AM »
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Offline F6FLT

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Re: Homopolar generator idea
« Reply #11 on: March 01, 2019, 03:26:39 PM »
In the video what would be the result if you spin the stator and magnet?
One in both the same direction, the other in opposite directions?
I would think the voltage would double.
artv

agreed.
The answer was above. Here are all cases:

1. Disc rotating + stator at rest: voltage
2. Disc at rest + "stator" rotating : voltage
3. Disc rotating + "stator" rotating in the same direction : zero voltage (due to no relative speed)
4. Disc rotating + "stator" rotating in the opposite direction : twice the voltage (due to twice the relative speed)

In any case, magnet rotating or not rotating: same effect

If case 3 provided a voltage, you could charge a capacitor connected between the axle and the rim of a Faraday disk and rotating with it. I did this experiment to be sure: no voltage.
I rotated the disc with the capacitor for a while, then I accelerated the motor, which disconnected the capacitor by centrifugal force on the rim contact. But at the arrival after stopping the motor, the capacitor was not charged!

Offline seaad

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Re: Homopolar generator idea
« Reply #12 on: March 01, 2019, 05:35:00 PM »

In any case, magnet rotating or not rotating: same effect


 Right motor is constantly spinning. Readings center to rim.
 Left motor: magnet rotating + or -,
 or not rotating at all: same effect
« Last Edit: March 01, 2019, 08:58:21 PM by seaad »

Offline F6FLT

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Re: Homopolar generator idea
« Reply #13 on: March 03, 2019, 09:42:15 PM »
Right motor is constantly spinning. Readings center to rim.
 Left motor: magnet rotating + or -,
 or not rotating at all: same effect

Never believe without verification!   ;)
Good point, and nice demonstration!

Offline shylo

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Re: Homopolar generator idea
« Reply #14 on: March 04, 2019, 09:57:58 AM »
So the stator has to see the disc in motion,and as long as a magnetic field is present a voltage is produced.
If you put on a second stator,could you collect double the voltage?
Or stators on both sides of the disc,reverse polarity but still a voltage?
artv

 

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