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Overunity Machines Forum



Permanent magnets and the electromagnet

Started by pinestone, April 10, 2009, 10:48:22 AM

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pinestone

April 10, 2009, 10:48:22 AM
With the help of my brother-in-law, I now have a small & powerful Bedini motor charging an almost dead 12V battery.

At some point during our experiments, he put a 1.2 T cylinder magnet on the end of the pulse coil's core. (opposite of the rotor end). The rotor increases its speed about 20%. If we add 2 more magnets at 90 degrees to the core at the same end, the rotor more than doubles its rotational speed.

see: http://www.nanomagnetics.us/projects/bedini%20motor/bedini%20w-magnets.jpg

Polarity matters. The fields are in repulsion (*corrected), and if we reverse the polarity, the motor slows down.

Has anyone else tried this?

I've made some tests and taken pix...maybe someone would care to comment.

The oscilloscope shows the waveform at the charge point. The frequency counter shows the input coil pulses and the meter indicates total current draw through the transistor.

Since my rotor has 3 magnets, the indicated frequency must be divided by 3 and multiplied by 60 to get RPM's.

First pix, no magnets: http://www.nanomagnetics.us/projects/bedini%20motor/1bedini%20no%20magnets.jpg
280 mA @ 1160 RPM

Second pix: 1 magnet: http://www.nanomagnetics.us/projects/bedini%20motor/1bedini%20w-one%20magnet.jpg
320 mA @ 1960 RPM

Third pix: 2 magnets: http://www.nanomagnetics.us/projects/bedini%20motor/1bedini%20w-two%20magnets.jpg
360 mA @ 2780 RPM

Fourth pix: 3 magnets: http://www.nanomagnetics.us/projects/bedini%20motor/1bedini%20w-three%20magnets.jpg
370 mA @ 3300 RPM

* I made a polarity correction.

WTF???

pinestone

#1
April 10, 2009, 09:30:19 PM
Well, I think I've figured it out. Someone let me know if this makes sense.

Normally, the rotor magnets are attracted to the steel core. There is a lot of rotational resistance due to the strong attraction.

By placing magnets on the opposite side of the steel core, a huge amount of repulsion appears on the rotor side of the steel core. This results in a minimum amount of 'stick' and the rotor can spin up faster with much less resistance.

;)

pinestone

#2
April 10, 2009, 09:31:28 PM
oops

akunkeji

#3
April 10, 2009, 11:21:42 PM
Yes, I have been doing so :)

Michelinho

#4
April 11, 2009, 02:05:50 AM

Hi pinestone,

Nicely done. You could also use copper around your coil to get a stronger pulse from your electromagnet. The coil must be fairly flat though. That principle is used in transformers.

Take care,

Michel

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