Today i tested the device with mutiple (3) coils.
In these tests the coils are not connected together, they are short-circuited individually.
All coils are bifilar-wound and individually serially-connected, here are their properties :
1.
L : 20 Henries +, more than my meter can read.
R : 406
2.
L : 20 +
R : 402
3.
L : 13.2
R : 390
Coils 1 and 2 were placed opposite each other, North and South of the rotor magnet, so-to-speak, and the third coil was placed in between them, at the East position.
Results of multi-coil tests :
No coils present.
hz : 502
ma : 452
1 coil present open circuit.
hz : 417
ma : 472
1 coil present short circuit.
hz : 505
ma : 445
2 coils present, both open circuit.
hz : 393
ma : 475
2 coils present, both short circuited.
hz : 514
ma : 438
3 coils present, open circuit.
hz : 388
ma : 474
3 coils present, all short-circuited
hz : 511
ma : 440
I think i understand why two coils outperformed three with my setup.
Because it is a single-magnet rotor, the two coils on opposite sides of the magnet are synchronised in the sense that they both experience the flux change at the same time, whereas the third coil, which is in the middle of the other two, experiences flux-change after the first coil and before the second of the other two coils, so the timing is wrong and possibly fights against the effect from the other two.
I confirmed this by moving the third coil closer to one of the others and performance goes up.
Also, coil three's inductance is 13 Henries vs 20+ Henries and that may contribute to the lack of additional performance benefits.
Obviously the single-magnet design has it's limitations, the physical space required for many coils isn't available and the timing problem, if i'm right about that.
Thane's idea is that, with multiple short-circuited coils, any loaded generator coils that are introduced to the system will have a minimum detrimental effect.
I did a small test with a high current coil in place with two acceleration coils and it accelerated the rotor under load, helping the effect while powering a small light bulb.
I'll be making a multi-magnet rotor now but in the meantime i'll experiment with getting power out of this device, time to order some more high-current wire ;+}
All the best,
DC.
In these tests the coils are not connected together, they are short-circuited individually.
All coils are bifilar-wound and individually serially-connected, here are their properties :
1.
L : 20 Henries +, more than my meter can read.
R : 406
2.
L : 20 +
R : 402
3.
L : 13.2
R : 390
Coils 1 and 2 were placed opposite each other, North and South of the rotor magnet, so-to-speak, and the third coil was placed in between them, at the East position.
Results of multi-coil tests :
No coils present.
hz : 502
ma : 452
1 coil present open circuit.
hz : 417
ma : 472
1 coil present short circuit.
hz : 505
ma : 445
2 coils present, both open circuit.
hz : 393
ma : 475
2 coils present, both short circuited.
hz : 514
ma : 438
3 coils present, open circuit.
hz : 388
ma : 474
3 coils present, all short-circuited
hz : 511
ma : 440
I think i understand why two coils outperformed three with my setup.
Because it is a single-magnet rotor, the two coils on opposite sides of the magnet are synchronised in the sense that they both experience the flux change at the same time, whereas the third coil, which is in the middle of the other two, experiences flux-change after the first coil and before the second of the other two coils, so the timing is wrong and possibly fights against the effect from the other two.
I confirmed this by moving the third coil closer to one of the others and performance goes up.
Also, coil three's inductance is 13 Henries vs 20+ Henries and that may contribute to the lack of additional performance benefits.
Obviously the single-magnet design has it's limitations, the physical space required for many coils isn't available and the timing problem, if i'm right about that.
Thane's idea is that, with multiple short-circuited coils, any loaded generator coils that are introduced to the system will have a minimum detrimental effect.
I did a small test with a high current coil in place with two acceleration coils and it accelerated the rotor under load, helping the effect while powering a small light bulb.
I'll be making a multi-magnet rotor now but in the meantime i'll experiment with getting power out of this device, time to order some more high-current wire ;+}
All the best,
DC.
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