Confirming the Delayed Lenz Effect

[synchro1]

I was asked to provide a schematic for my simple SB thread spool coil pulse motor circuit with the precision ceramic bearing that yielded those dumfounding OU results! Here's what it looks like:

[MileHigh]

Synchro1:

I am assuming that you are calling your setup OU because of the very high RPM you observed.  You mentioned that it did a "jump up" in RPM.  Note that TK explained how it's easily explainable how an excitation frequency of X can make a rotor turn at 2X or 4X speed.

If I recall you also mentioned that you weren't able to measure any current going into the setup when it was turning at the extra high speed.

I can suggest the following:  You might have a 10,000 or 20,000 uF capacitor in among your parts.   So connect the big capacitor in parallel with your battery and try to get your motor to spin at the extra high speed.  Put a voltmeter across the capacitor.

Assuming that you can do this then once the motor is spinning at the extra high speed disconnect the battery and let it run on the big capacitor only.  You will see the capacitor voltage start to drop.

So with this first test step you can confirm that the motor does indeed draw current and consumes power.  This suggests a logical second test.  Do exactly the same thing but this time after four seconds disconnect the capacitor from the motor.  So you end up with the capacitance, the start voltage, the end voltage, and the time interval.  That gives you enough information to calculate the power consumption of the motor.

MileHigh

[synchro1]

@Milehigh,
                 Thanks for the advise. That's an approach I plan to try.
 

[Farmhand]

Conrad if you're using AC excitation then a charging inductor might not be much use to you. I got a good increase in speed for the same drive pulse width by using the charging inductor as a motor coil, it would seem that the phases are a bit different of course, I'll investigate the differences in phase between the motor coil current and the charging inductor current, even though the coils are in series the motor coil current is first, the inductor current only flows when the discharge capacitor goes below supply voltage but I'm not certain when it stops or if there are changes in phase due to rotor speed or timing ect.

Just as with most things as the rotational speed increases the optimum timing for the coil to fire before the magnet is dead center varies. I won't call it top dead center because it is not an I.C.E., so the top has nothing to do with it.  Nothing moves up and down like the piston to be at top dead center. Anyway the inductor current is a bit after the motor current so placement is important, directly opposite might not be the best position. I found if I place the charging inductor at about 20 to 30 degrees after the motor core it has good effect when the motor is already spinning but it does not aid in start up torque there. If I place it directly opposite the motor coil at 180 degrees then it does add start up torque and increase the rpm for the same PW but the max rpm is less than if it is added at 30 degrees while the motor is already spinning.

I'll hold off where I think the best placement is until after I scope the currents.

I made a new motor coil from two strands of what looks like about 0.6 mm wire, 65 meters each and made the old motor coil the charging inductor for now, I organised the wire so I can make another coil the same.

Basically it seems the charging inductor can be used as a series drive coil as well, and after the first switching of the drive coil the voltage it gets is increased and the phase of the charge inductor current is then lagging the drive coil currents, or so it would seem on first glance. Now if I can get the drive coil to discharge into a cap for the charging inductor to draw from, then the power draw will decrease as well, but then there will be no charge battery. With very low input power a charge battery is almost pointless anyway unless it is small, or desulfation is wanted. When I get the motor coils and rotor arrangement I want I'll build a more solid motor with places for generator coils. Then I'll go for the resonant generator coils with switched loads.

Cheers

P.S. Drawing shows basic idea.  Disregard the little rectangles drawn on the rotor they mean nothing they were meant to be rubbed out (just reflector strips).
Of course the idea can be expanded to include more sets of two coils.

I think it might be time to have a look in Tesla's invention book.    http://ia600302.us.archive.org/16/items/inventionsresear00martiala/inventionsresear00martiala.pdf

[TinselKoala]

Try biasing your solenoid drive coils by placing a small NdB magnet on the core end away from the rotor. Try both polarity orientations of the bias magnet while the motor is running.
If you are using mechanical reed switches, their performance (timing, durability, jitter, etc) can be improved by using a tiny magnet, fixed in position, near the reed, usually on the opposite side from the rotor magnet passage. Again, experiment while the motor is running, moving a small magnet around the reed switch. You can also extend the life of your expensive reed switches by using a small ceramic capacitor directly across the switch. Of course... this will usually also kill any "ou" effect from the switch.