The Ossie motor

[woopy]

@ Futuristic and Cp and Gyula

thanks for replying my boring question


1- the scope trace (see pix) is perfectly centered and    if it would be no pulse     the AC trace would be + 5.2 volt and - 5.2 volts . as Cp showed in is post 

so  if i understand well, the red impulse rectangle " eat " the positive  green generation curve and supress the small blue bump which desappears this is  due to a CEMF ?


2- now what shows the negative purple curve which is not affected by the red pulse.

for info i have inserted my shottky bridge across the coil and i get the inversion of the negative AC trace, which become positive. But if i try to charge my supercap directly from the bridge the Rpm first fall down and than as the cap charges they go up again.  Same thing with the current which first goes up and than down.

Now the super cap charges quite fast at the beginning and than slower and slower  Now after 3 hours the super cap is at    4.37 volts    still climbing and the battery is down at 4.25 volts (it was 4.29 at the beginning).
The Rpm was at 175 at the beginning, went down to 162 when i connected the supercap and are now back to 172 seems at max with thge battery at 4.25 volt  .

Now the question     is my motor using the juice of the battery and go down and down      and in counterpart the supercap pumps the energy of this negative Ac curve wich stay undisturbed by the pulse as is positive sister ? And as this negative curve is slightly higher in negative volts (5.2 volts at the beginning and now on my scope is  at 4.96 volts) Does it show trhat the supercap will charge up to probably more than 4.5volts (depending of diodes and circuit resistance) while the battery will go down more ?   How can we put the supercap backstored energy in the battery   ?  Any idea ?



3- As the motor is an attraction motor, we aggree that the impulse current  is independant of the magnet strength .correct?

If yes the bigger the magnet , the stronger the torque for the same impulse current? correct ?

So would it be a good idea to place a second magnet on the other side of the coil   so double torque for the same current ? correct?



4- where and what is the best position of the magnet to the coil.  Must the magnet be round to fit the round aire core ?  Can it be a rectangular magnet with the aircore width but longer, covering the whole height of the coil ?

any idea ?


And it is all for this post

thanks to all

Laurent

[futuristic]

Just one quick answer.

I have tried putting one magnet behind stator coil, because by logic the coil should extend magnet's field when energised. By doing this there should be more torque, but my experiment didn't show any improvement.
Please try it yourself maybe you will have more success, because in theory it should work.

Frenky

[futuristic]

4- where and what is the best position of the magnet to the coil.  Must the magnet be round to fit the round aire core ?  Can it be a rectangular magnet with the aircore width but longer, covering the whole height of the coil ?

any idea ?

This could be tested in Femm (magnetic field simulation software), but I haven't been using it for quite some years so I am probably not the right person to do it.
But my opinion is the bigger and the stronger magnets will show the best results.

Frenky

[woopy]

Hi Frenky

what i meant is a sandwitch rotating rotor see picture. Can be mounted on 2 disc and flat coil config or as usual on a rotor with a drum on it to support the outer magnet.

i am not knowing FEMM but if somebody could help

last update  my battery is now after 5 hours at 4.24 volts and the supercap at 4.43 volts Rpm at always 172

regards

Laurent

[futuristic]

Great thinking.
This would for really improve performance.