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

[teslaalset]

The flux will dissipate inside the core just like it would dissipate in the air if it did leave the core.  When the energy source is cut, the flux doesn't remain and will dissipate quickly.  It doesn't stay around very long when there is no energy source.  If it didn't dissipate after the current is cut, then we could cut the power and still have the flux.

GB

I think you are right. See the update on my previous posting.

[Airstriker]

The flux will dissipate inside the core just like it would dissipate in the air if it did leave the core.  When the energy source is cut, the flux doesn't remain and will dissipate quickly.  It doesn't stay around very long when there is no energy source.  If it didn't dissipate after the current is cut, then we could cut the power and still have the flux.  Sorry, but your rebuttal is B.S.   

GB

Ok now I don't understand you. What is the difference between "field colapse" and "field dissipate" according to you? And then you're negating your own words by saying: "If it didn't dissipate after the current is cut, then we could cut the power and still have the flux". So according to you the field stays there when the current is cut or not ??

Metglas histeresis loop is very narrow - meaning you don't need much energy to remagness (saturate) the core. It's also magnetically soft material - which means it DOES like high frequencies and the field does not simple stay in it (saying in simple words). So please admit that you are wrong ;]

[gravityblock]

Ok now I don't understand you. What is the difference between "field colapse" and "field dissipate" according to you? And then you're negating your own words by saying: "If it didn't dissipate after the current is cut, then we could cut the power and still have the flux". So according to you the field stays there when the current is cut or not ??

When the field collapses then the flux physically leaves the core and will cut the wires.  As it is physically leaving the core it is also dissipating, meaning it's field strength is decreasing towards 0 outside of the core.

With the metglas, the flux does not physically leave the core to cut the wires as it's field strength is decreasing in strength towards 0 inside the core so it never cuts the wires to induce a BEMF.

After the current is cut, the field is completely gone after it quickly decreases in strength towards 0 weather it dissipates while it is leaving the core and cutting the wires, or if it dissipates inside the core without cutting the wires.

GB

[teslaalset]

The B-H curve of the example I posted shows also that it will be very difficult to find and stay in the situation where the permeability is very high.
I am beginning to understand why Sean says the tolerances to put this together are extremely tight.

[happyfunball]

http://www.youtube.com/watch?v=veoRZh0GTkQ

Cancelling CEMF? Not sure the motor would run if the coil is between N-S magnets