A shaft with a single iron disk and point brush, and an ordinary
brush to the shaft, should work. The iron disk should be fairly
thick. The "point brush" on the iron disk could be made from a thin
copper disk, mounted on a copper shaft and electrically connected
using an ordinary brush, as shown in Fig. 5.
|
|
(+) | copper brush disk
BB vvv BB |
==================|
BB BB |
|
|
|
* arc
|||
|||
(-) ||| iron driver disk
BB vvv BB |||
=================|||
BB BB |||
|||
|||
|||
Key:
BB - bearing
vvv - brush
=== - shaft
| - copper disk
||| - thick iron disk
(+) - positive or AC terminal
(-) - negative or AC terminal
* - brush contact point arc
Fig. 5 - Cross section view of alternative Marinov motor
This motor would not be very effective because it only has one
contact point. The one compensation is it should be able to handle
massive current, and the torque is a product of current squared
because the current generates the B field, so the magnitude i L B of
iL x B is really i L (k i) = i^2 L k.
Conductivity could be increased by using an iron ring on a copper
disk in place of the iron disk.
It might be possible to substitute one or more thin conductive arcs
for the copper disk.
Best regards,
Horace Heffner
http://www.mtaonline.net/~hheffner/
