Work from 2 magnets > 19% output 2

[Floor]

Acknowledged

            floor

[Floor]

Why does the twist drive work ?

Why is there such a great difference between the
inducing and induced fields in an electromagnet ?

It takes less force and or energy to rotate atoms / molecules into a magnetic domain
alignment, than the net linear force which those atoms can  manifest collectively
as magnetic domains.

The twist drive works for the same reason ?

                           floor

[Low-Q]

You might have experienced what we call flux modulation - that has played you a trick.
Flux modulation might be a problem in speakers. The magnetized iron pole piece is modulated by the voicecoil (Which is an electromagnet), and cause modulation of the magnetic airgap where the voicecoil is located. This will cause a different BL product on positive versus negative excursion of the coil.

[Floor]

@Low-Q

QUOTE FROM Low-Q

"You might have experienced what we call flux modulation - that has played you a trick.
Flux modulation might be a problem in speakers. The magnetized iron pole piece is modulated by the voicecoil (Which is an electromagnet), and cause modulation of the magnetic airgap where the voicecoil is located. This will cause a different BL product on positive versus negative excursion of the coil."
END QUOTE

I was not referring to either, an alternating or pulsating DC current. 
Iwas NOT referring to a solenoid WITH  A MOVING CORE.

I am referring to the fact that a DC energized coil WITH  AN IRON CORE (an electromagnet)
can produce a MANY TIMES GREATER magnetic force than...

that same DC energized coil in the absents of an iron core.  This even when the same amperage
is flowing through the coil in both cases.

                             floor

[Low-Q]

OK. Iron will narrow the magnetic flux into its core on the expense of less magnetic flux outside it, but the total magnetism, if you could "count" the magnetic lines, will be the same number as in an electromagnet with an air core.
The flux must loop from north to south. When you use an iron core, the fluxlines are taking sharper corners than using air core. Therfor the magnetic force is greater with an iron core, but on the expense on how far that force can reach - normally in a very narrow space.
It is where the fluxlines takes its sharpest corners where the force is greatest - closest to the physical corners/circumference of the iron core at the south or north pole.


What has this to do with the twist drive? Does it make any difference in practice wether you use iron core or not? No criticism, just asking.


Vidar