STEORN DEMO LIVE & STREAM in Dublin, December 15th, 10 AM

[esaruoho]

Hi Esa,
many thanks for the nice pictures.

Could you speak with the Steorn stuff there ? Is it right, that the display Orbos still
use Reed relay switches for the coil current
switching ,but the bit different  Dec. 19th Demo unit did use optocoupler-transistor switches
for the coil switching ?
Many thanks.
Regards, Stefan.

tachoman used the words "reed" and "switch" when he was talking about  the orbo demonstrations.
didnt speak to any staff, just asked tachoman what he was doing, and listened to him answer other people's questions.
i'm a bit not sure if i should upload video of him talking, but i'll upload it for myself for archiving purposes and see who else i should give it to. lets see. (im not sure if its allowed to just randomly film someone and push him  online, to be seen by steorn skeptics and antiskeptics -- would i get into trouble? i guess i'm allowed to show it to like a friend i know, or something..)
either way, im still uploading.

[wings]

a parametric circuit that operate the coil to OU ?

http://jnaudin.free.fr/html/largcoil.htm

http://jnaudin.free.fr/html/parabifc.htm

[gravityblock]

You only need enough permeability to contain most of the flux in the core.  A stronger magnetic field will require a higher permeable material.

A higher permeable material will require more amps from the pulse to eliminate the magnet from being attracted to the core in order to eliminate the CEMF.  This is the reason to keep the permeability as low as possible according to the strength of the magnetic field.

This is what I suggest:

1)  Find out what the maximum attraction force is for the least permeable material.  If there is no maximum attraction force, then find the best ratio ( I doubt this will be the case though).

2)  Match this permeable material with a magnet with a field strength that saturates this core, but not to the point where there is stray flux outside this core ( we want nearly all of the flux to be contained within the material).

3)  Find the distance the magnet is no longer attracted to the core.  This distance will be the radius we will need to wind our toroid.  This will also affect the decision we make in step 1.  We want maximum attraction force with the least amount of distance before it starts to attract. This allows our pulse to be shorter while gaining the most momentum.

4)  The smaller the surface area is for the core, the shorter the pulse will need to be.  The surface area of the core will need to be taken into account in step 1.

5)  Send a quick pulse to the coil with the least amount of amps to cancel the magnet from being attracted to the core.

6)  Correct and improve on the above

7)  Stop reading and do it!


Edit:  Wings, those links look interesting.  Thanks


GB
 

[lumen]

This is a concept for a toroid meg generator.
Every other toroid coil would be energized as a set to allow the field from the two large disk magnets to flow through the cores of the toroid coils that are off.
Then the alternate set of toroid coils would be energized and the previous set would be turned off.

The cores of the off toroid coils would become the core for the outer windings.

[k4zep]

You only need enough permeability to contain most of the flux in the core.  A stronger magnetic field will require a higher permeable material.

A higher permeable material will require more amps from the pulse to eliminate the magnet from being attracted to the core in order to eliminate the CEMF.  This is the reason to keep the permeability as low as possible according to the strength of the magnetic field.

This is what I suggest:

1)  Find out what the maximum attraction force is for the least permeable material.  If there is no maximum attraction force, then find the best ratio ( I doubt this will be the case though).

2)  Match this permeable material with a magnet with a field strength that saturates this core, but not to the point where there is stray flux outside this core ( we want nearly all of the flux to be contained within the material).

3)  Find the distance the magnet is no longer attracted to the core.  This distance will be the radius we will need to wind our toroid.  This will also affect the decision we make in step 1.  We want maximum attraction force with the least amount of distance before it starts to attract. This allows our pulse to be shorter while gaining the most momentum.

4)  The smaller the surface area is for the core, the shorter the pulse will need to be.  The surface area of the core will need to be taken into account in step 1.

5)  Send a quick pulse to the coil with the least amount of amps to cancel the magnet from being attracted to the core.

6)  Correct and improve on the above

7)  Stop reading and do it!


Edit:  Wings, those links look interesting.  Thanks


GB

Right on GB, Now I know at least one other person understands what is going on!!! With neo 48's, my lowest u torroid attracts from about 3/4" away and with a u over 200, about 1.5" on my synthetic clock bearings....something has gotta give. I have 6 different toroids and all in the 40 to 200u + range,  Need to get some with a u in the 1-10 range, will take about a week or so to get.  its a delicate balancing act.  We don't have to totally shield the core but the better, the more output.  Too much inductance and it won't switch fast enough, too little, and not enough shielding.  I give Stoern kudos on his simple motor, ingenious.  There doesn't appear to be much back emf due to dual magnets and wiring of coils, but there certainly is inductive kickback but it just adds to the total shielding effect.  Have the basic electronics to switch with hall effects/FET's or IGBT's.  Just have to get the coils right.  Will be most interested in the No-Lenz generator section, hope they don't dwell too long on the motor.

Ben