- #1
Gravitron
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I have a moving magnetic field that rotates around the polar (Y) axis - see below - and I want to translate the energy in the form of electricity, what should I try.
1) I have created a magnetic field that rotates around the polar axis from the surface of a disc shaped magnet to about 1.5" above the surface (where rotation seemingly ceases)
a) yes I know that some argue that the uniform field does not and will not rotate around the polar axis.
b) I have verified rotation and observe significant hysteresis and the associated torque in a conducting sheet, via eddy currents in the sheet.
c) I have observed rotation via linking two discs together, one being driven while the other is free to spin on a bearing. When one moves, the other follows (not normal for two discs to do this)
d) I have observed movement using a variety of methods including ferrofluid - On a normal disc, the fluid remains stationary no matter how fast the disc rotates or how close the fluid container is to the disc. In my disc, the fluid is whipped around at the same velocity as the disc.
E) By design, rotation of the field is limited to an area from the surface of one side of the disc to 1.5" above the surface. The perimeter of the disc (side) is not affected and does not seem to rotate and the field at the center of the disc seems also to remain stationary.
F) I have tried several coils and here are the results - Wire Coil No Core, 100 turns of 22Ga magnet wire connected from center shaft to perimeter with shaped wire- No current when disc is spun, .5 ma when the coil is moved laterally. - Toroidal coil with 100 turns 22ga magnet wire connected in the same way as above - no current when disc is spun, .5a when coil is rotated.
g) I am a bit confused by the fact that I get such a great torque from eddy currents in a sheet of copper when the disc is spun, but nothing with a coil. My original hypothesis was that by using a coil and eliminating eddy currents, I should be able to translate that energy into electrical current. Any suggestions would be appreciated.
That being said, I would like to create electricity from this set up. This is a unipolar set up in that only one pole will ever face the conductor. The typical disc set up like that of Faraday or the one piece HomoPolar generator does not produce electricity, only eddy currents and a significant "braking" of the device.
G
1) I have created a magnetic field that rotates around the polar axis from the surface of a disc shaped magnet to about 1.5" above the surface (where rotation seemingly ceases)
a) yes I know that some argue that the uniform field does not and will not rotate around the polar axis.
b) I have verified rotation and observe significant hysteresis and the associated torque in a conducting sheet, via eddy currents in the sheet.
c) I have observed rotation via linking two discs together, one being driven while the other is free to spin on a bearing. When one moves, the other follows (not normal for two discs to do this)
d) I have observed movement using a variety of methods including ferrofluid - On a normal disc, the fluid remains stationary no matter how fast the disc rotates or how close the fluid container is to the disc. In my disc, the fluid is whipped around at the same velocity as the disc.
E) By design, rotation of the field is limited to an area from the surface of one side of the disc to 1.5" above the surface. The perimeter of the disc (side) is not affected and does not seem to rotate and the field at the center of the disc seems also to remain stationary.
F) I have tried several coils and here are the results - Wire Coil No Core, 100 turns of 22Ga magnet wire connected from center shaft to perimeter with shaped wire- No current when disc is spun, .5 ma when the coil is moved laterally. - Toroidal coil with 100 turns 22ga magnet wire connected in the same way as above - no current when disc is spun, .5a when coil is rotated.
g) I am a bit confused by the fact that I get such a great torque from eddy currents in a sheet of copper when the disc is spun, but nothing with a coil. My original hypothesis was that by using a coil and eliminating eddy currents, I should be able to translate that energy into electrical current. Any suggestions would be appreciated.
That being said, I would like to create electricity from this set up. This is a unipolar set up in that only one pole will ever face the conductor. The typical disc set up like that of Faraday or the one piece HomoPolar generator does not produce electricity, only eddy currents and a significant "braking" of the device.
G