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Hi All
Here is an idea I have about the Faraday Homo-polar generator.
It seems there are two problems with the design. The first is the losses of the contacts on the perimeter of the rim. The best solution is a liquid metal contact, but this complicates the design. The second is that it is a low voltage DC high current output. Very few devices use low voltage DC with high current. One solution is to drive a homo-polar motor which then drives something as a prime-mover.
The voltage is dependent on the distance between the axis and the perimeter. The bigger the diameter, the bigger the voltage. Enter my idea:
Suppose we take a six foot long piece of metal and suspended it at one end on bearings to swing as a pendulum. Place it all on a tall ladder near your workbench. I was going to mount it on a old double shaft motor. All your spare magnets could be attached down its length with all the like poles facing the same direction. This I am assuming would be a small cross section of the rest of the non-existent Faraday disc. Therefore, in this small cross section, the physics would be the same as if it were a disc?
Now attach a wire to the bottom of the pendulum and tape it running up the length of the pendulum to the top. Wind about 6 turns around the axle like a clock spring and bring the end of the wire to your bench. Attach another wire to the back of the axle, wind about six turns around the axle as a spring absorber and bring its end to the bench. Now, if the theory holds true that this is a small cross section of Faraday disc, we should get a voltage as the pendulum swings?
If this works, we now have slow moving AC with higher voltage. We have a six foot radius instead of maybe six inch radius. We have eliminated the contact problem by rigidly attaching the wires. The AV voltage can be captured to charge a cap or battery, which would then fire a motor coil. You could possibly capture the bemf of the fired coil to fire another coil, etc and recycle as much of the energy as possible. Hopefully, this will be enough energy to keep the pendulum going indefinitely?
I am not going to be able to try this idea. I leave it up to you to try if you think it has merit.
Chris
Here is an idea I have about the Faraday Homo-polar generator.
It seems there are two problems with the design. The first is the losses of the contacts on the perimeter of the rim. The best solution is a liquid metal contact, but this complicates the design. The second is that it is a low voltage DC high current output. Very few devices use low voltage DC with high current. One solution is to drive a homo-polar motor which then drives something as a prime-mover.
The voltage is dependent on the distance between the axis and the perimeter. The bigger the diameter, the bigger the voltage. Enter my idea:
Suppose we take a six foot long piece of metal and suspended it at one end on bearings to swing as a pendulum. Place it all on a tall ladder near your workbench. I was going to mount it on a old double shaft motor. All your spare magnets could be attached down its length with all the like poles facing the same direction. This I am assuming would be a small cross section of the rest of the non-existent Faraday disc. Therefore, in this small cross section, the physics would be the same as if it were a disc?
Now attach a wire to the bottom of the pendulum and tape it running up the length of the pendulum to the top. Wind about 6 turns around the axle like a clock spring and bring the end of the wire to your bench. Attach another wire to the back of the axle, wind about six turns around the axle as a spring absorber and bring its end to the bench. Now, if the theory holds true that this is a small cross section of Faraday disc, we should get a voltage as the pendulum swings?
If this works, we now have slow moving AC with higher voltage. We have a six foot radius instead of maybe six inch radius. We have eliminated the contact problem by rigidly attaching the wires. The AV voltage can be captured to charge a cap or battery, which would then fire a motor coil. You could possibly capture the bemf of the fired coil to fire another coil, etc and recycle as much of the energy as possible. Hopefully, this will be enough energy to keep the pendulum going indefinitely?
I am not going to be able to try this idea. I leave it up to you to try if you think it has merit.
Chris