Hi,
this is an Earth Pole DC motor which I designed and built.
It is very interesting and rewarding to to give it a try as it demonstrates profound concepts
with few components promoting further understanding of the concepts.
The polarity on the armature is shifted accordingly (+/-12V) instead of simply switching ON and Off.
The Unit is first aligned towards the North Pole which is the optimal position for fastest rotation, then it is rotated by 90 degrees to a bad position where the Motor slows down to a dead stop to indicate the North direction.
This motor uses the earth's magnetic field to run.
If too many of these are allowed to run the earth will run out of magnetic energy. The earth will stop turning.
This motor uses the earth's magnetic field to run.
If too many of these are allowed to run the earth will run out of magnetic energy. The earth will stop turning.
Not skeptical but.......
The amount of torque is about what you can get from a compass. That shows what a good bearing you made.
I think you have a compass, not with a fixed magnet, with a electrical magnet that you switch polarity on.
I think it has some problems starting.
Good work, thank you for showing us! I wish I had one.
Not skeptical but.......
The amount of torque is about what you can get from a compass. That shows what a good bearing you made.
I think you have a compass, not with a fixed magnet, with a electrical magnet that you switch polarity on.
I think it has some problems starting.
Good work, thank you for showing us! I wish I had one.
I agree - basically it's a nice toy, but nothing more - but it's impressive that he managed to make it rotate with such a weak stator 'magnet'.
However, for those who's repaired CRT colour TV's over the years the earth's magnetic field is obvious, as you see when you rotate a CRT colour set whilst it's switched on, as the purity is changed by the earth's magnetic field.
Also... on a monitor the picture will move and rotate a small amount. This is not seen on a TV because of over scan. On a monitor the edge of the picture might be 2mm off the edge of the basal so the picture movement is a real problem.
The other problem of course, it that it's VERY unimpressive
Fair enough, WE'RE all suitably impressed, but the vast majority of the public wouldn't be impressed at all - and wouldn't even know there's no stator magnet.