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

[teslaalset]

If we're going to use a BH-curve, then it would have to be the upper part of the BH curve, but even  that is not accurate for this setup. Consider the following two images. One image simply shows the full BH curve of the normal material just as a reference. The thin image shows the upper part of the BH curve, which you should use for the Orbo analysis, but again even that is inaccurate for the Orbo design due to the external field from the magnet.

Some delay in response, Paul (I am in Europe)
Yes, it must have something to do with the external magnetic field, since even the higher permeability area at the top of the specified B-H curve is quite flat. Using that part of the B-H curve will not justify the slow energy gain in the last part of the cycle. It's either the external magnetic field or they use FineMet cores.

Some real B-H curve measurement are necessary to confirm, but I believe you are correct.
As soon as I have some Metglas cores I'll have a look into measuring the B-H curve at that position with the magnet around.

[penno64]

Quote from: plengo on January 05, 2010, 08:08:35 PM
"I think you guys should watch this video from Bedini: http://www.youtube.com/watch?v=NYh8W3_EZjc

Hi all,

Has any been able to replicate Bedinis setup.

He says his rotor has 8 magnets and states he is using his bi-polar switch and running on three poles. Does this mean his disc that has magnets to switch the hall effect has only three magnets ??

Sorry for repeating this subject (question) but, I would really like to replicate this setup.

I tried to follow, via the comments on you tube, but got lost in that poster description.

Kind Regards, Penno

[PaulLowrance]

teslaalset,

The Ising model applet shows:

1. As magnet is at TDC, and as the coil current begins to increase, the permeability is low. This is seen in the Steorn integrated power plot as a sudden rise-- see "Ref. A" in the attached image, violet text.

2. Due to the resistance of the circuit, the current reaches maximum, and the power disipation is relatively constant. This is seen in the Steorn power plot at "Ref. B" in the attached image.. In the Ising applet the permeability increases a bit, but this will not show up in the power plot because the coil current is now high, and hence the circuit is mostly resistance at this point.

3. The coil current turns off, and the diode bridge rectifier conducts. The Ising applet shows the permeability is very low as the field begins to decrease. This is shown in the power plot as a rapid downward slop-- see "Ref. C".

4. As the applied field on the toroid core approaches zero (caused by the pickup coil), the Ising applet shows that the permeability begins to significantly increase. This is seen in the power plot as "Ref. D"

[wings]

If we're going to use a BH-curve, then it would have to be the upper part of the BH curve, but even  that is not accurate for this setup. Consider the following two images. One image simply shows the full BH curve of the normal material just as a reference. The thin image shows the upper part of the BH curve, which you should use for the Orbo analysis, but again even that is inaccurate for the Orbo design due to the external field from the magnet.

This is a "static" curve (no external magnet moving effect) just the coil and the core.

The "dynamic" curve (with the magnet approaching to the core) is more large because the saturation due to magnet effect.

my feeling is that the saturation curve change is similar to the enclosed picture.

The gain of energy must be find within the change between the two condition "no load=no magnet" and "shorted=with magnet".

Moving anti clockwise between the two curve (having the contribution of the moving magnet) you have OU.

[PaulLowrance]

As I see it, shorting the coil will only result in wasted energy.