Hi all,
probably this is the wrong place but I did not find anything else that fit better.
A couple of days ago I bought the SG Advanced Book.
Within Chapter 6 'The Simple Low-Drag Generator', Page 55, last paragraph there is a statement that I think is totally wrong.
'The Lenz reaction produced by this current is applied back towards the external magnetic field in exact opposition to the angle by which it is induced. In this case, it reduces the permanent magnet's attraction to the iron core, which is still mostly vertical in its orientation at this moment.'
Well, I guess if that would be really the case we would have self running SG's all over the place since years ;-)
I build too many advanced SG's that such an effect would have passed me unnoticed.
Matter of factly using a pick up coil with a reasonable load, eg. a 100 Ohm resistor will exibit the following effects.
While the rotating permanent magnet approches the iron core a voltage is induced in the coil as described. The flow of current caused by the load produces a Lenz reaction (Force) that acts against the approaching magnet. This is exactly was is described in the book.
While leaving the core, things change.
Now again a voltage of the same amplitude is induced in the coil, but this time with the polarity flipped over. Obviously the current now reversed direction as well. The Lenz reaction is inverted too of course. That means that the attraction to the core is increased and not reduced as described in the book.
Following the description within the book would mean, that the wheel is accelerated while approaching the core and by drawing away energy by the generator coil the wheel would be slowed down lesser while departing the core the more energy is drawn away...
That means under load the wheel would get going faster and faster until it disintegrates. That way you would even not need any circuity to drive the wheel...
Well, by all means that one is quit epic, isn't it?
Especially because the whole chapter and more or less the whole book is dedicated to the whereabouts of using the mechanically out of phase Lenz reaction of the low drag generator setup.
I wonder if anybody else has found that evil typo as well by now.... ;-)
Cheers
Stephan
probably this is the wrong place but I did not find anything else that fit better.
A couple of days ago I bought the SG Advanced Book.
Within Chapter 6 'The Simple Low-Drag Generator', Page 55, last paragraph there is a statement that I think is totally wrong.
'The Lenz reaction produced by this current is applied back towards the external magnetic field in exact opposition to the angle by which it is induced. In this case, it reduces the permanent magnet's attraction to the iron core, which is still mostly vertical in its orientation at this moment.'
Well, I guess if that would be really the case we would have self running SG's all over the place since years ;-)
I build too many advanced SG's that such an effect would have passed me unnoticed.
Matter of factly using a pick up coil with a reasonable load, eg. a 100 Ohm resistor will exibit the following effects.
While the rotating permanent magnet approches the iron core a voltage is induced in the coil as described. The flow of current caused by the load produces a Lenz reaction (Force) that acts against the approaching magnet. This is exactly was is described in the book.
While leaving the core, things change.
Now again a voltage of the same amplitude is induced in the coil, but this time with the polarity flipped over. Obviously the current now reversed direction as well. The Lenz reaction is inverted too of course. That means that the attraction to the core is increased and not reduced as described in the book.
Following the description within the book would mean, that the wheel is accelerated while approaching the core and by drawing away energy by the generator coil the wheel would be slowed down lesser while departing the core the more energy is drawn away...
That means under load the wheel would get going faster and faster until it disintegrates. That way you would even not need any circuity to drive the wheel...
Well, by all means that one is quit epic, isn't it?
Especially because the whole chapter and more or less the whole book is dedicated to the whereabouts of using the mechanically out of phase Lenz reaction of the low drag generator setup.
I wonder if anybody else has found that evil typo as well by now.... ;-)
Cheers
Stephan
Comment