Canceling Lenz's Law - Methods

[gyulasun]

(P.S.  One could use individual Schottky diodes in place of the silicon rectifiers for a .7V drop compared to the 1.4V drop - a 50% savings.  Now the rectifier losses are down to 53W.  But still, do you 'gain' more than '53W' by reducing the cogging?  What IS the potential gain of the low-cogging?)

Hi,

You can further reduce the loss of the rectifier diodes by using so called syncronous rectifiers which are power MOSFETs with low Rds on resistance switched on when your rectifier diode is to conduct. Here is a practical circuit:
http://electronicdesign.com/Articles/Print.cfm?ArticleID=19871    IF this seems rather involved to replace the usual full wave bridge, well it maybe is but you do get power savings. And there can be simpler circuits for this job.

rgds,  Gyula

[capthook]

Gyula - great stuff as always!

"The circuit was compared to a popular KBU8B silicon diode rectifier. At an input voltage of 5 V rms at 50 Hz and a constant load of 5 A dc, the KBU8B’s output was 4.45 V dc, average, measured across C3 (15,000 μF). Under the same conditions, the “greener”  (MOSFET) rectifier produced an output of 5.9 V dc, average."

I've investigated MOSFET rectifying in the past because of it's greater efficiency.  But actually building/implementing the circuit has (and still is) been over my head.  The link you gave is great study material.  (The first time I implemented individual Schottky diodes over a store-bought silicon rectifier, I considered it an excellent step forward -MOSFETs would be an even greater step)

And there can be simpler circuits for this job.
rgds,  Gyula

Say you have 3-phase output @ 14v x 1 amp.  Any easy step-by-step MOSFET circuits for idiots? 

[SkyWatcher123]

Hi folks, hi wings. Are you posting those links with inactive pics to point out where he said his 6 magnet/stator layout changed something because Ive already read through all that material years ago and all his posts on overunity.com or whatever the old name was and never read that. I dont think it matters truthfully because I think there is something to this design and any dc unidirectional pulse motor for that matter. When a perm. magnet enters and exits both polarities are induced and cancel one another and as it exits it negates or lessens any buildup of voltage that was acquired on entry if using attraction mode, hence the less voltage to counter input and thats what i think im seeing as well, not sure about the magnet field pulling back effect to aid input although i wouldnt rule it out seeing how the permanent magnet field is compressed. Im running a 5 blade car radiator fan as a load, the big metal ones. it really moves a heck of a lot of air i have to say with no coil heating noticed at 36v, 4A total parallel series coil circuit is .75 ohms, 18 awg.. I cant yet do proper prony brake tests without a tachometer setup although maybe i can use my model airplane tach, problem is it responds to the 60hz pulsations from room lights so I have to figure something out for that.

peace, love, light     

[gyulasun]

Hi folks, hi wings. Are you posting those links with inactive pics to point out where he said his 6 magnet/stator layout changed something because Ive already read through all that material years ago and all his posts on overunity.com or whatever the old name was and never read that. I dont think it matters truthfully because I think there is something to this design and any dc unidirectional pulse motor for that matter. When a perm. magnet enters and exits both polarities are induced and cancel one another and as it exits it negates or lessens any buildup of voltage that was acquired on entry if using attraction mode, hence the less voltage to counter input and thats what i think im seeing as well, not sure about the magnet field pulling back effect to aid input although i wouldnt rule it out seeing how the permanent magnet field is compressed. Im running a 5 blade car radiator fan as a load, the big metal ones. it really moves a heck of a lot of air i have to say with no coil heating noticed at 36v, 4A total parallel series coil circuit is .75 ohms, 18 awg.. I cant yet do proper prony brake tests without a tachometer setup although maybe i can use my model airplane tach, problem is it responds to the 60hz pulsations from room lights so I have to figure something out for that.

peace, love, light     

Hi,

Garry has got a (now inactive) yahoo mail group:   http://tech.groups.yahoo.com/group/Pulse_Motor_Group/

and his message #1376 is of interest for your question: http://tech.groups.yahoo.com/group/Pulse_Motor_Group/messages/1376

If you are not a member there, (though it would be worth to become a member so that you could read all the letters written 2003 December to 2004 January) here is the full text of reply #1376 Garry wrote to Stefan Trethan (who did not believe Garry statement as of his 2 parallel coil setup has no Lenz effect):

Well Stefan,

I hate to say it but it looks like you may be right or at least more right
than I thought you were.

Since I removed 6 of the 12 coil pairs because when disconnected the motor
ran better and I assumed from this that the coils were to close together and
the pulse was pulling the magnet that was exiting the coil back at the same
time as it pulled the entering one in, but with less strength and so the
motor ran better without them.

So for the first time while trying out the caps I have on it to see what
would happen suddenly I have output and not just a couple of volts like
before now I have 1.8 volts per coil pair with 0.9 volts per coil and 0.1
volt measuring inside the coil pair when running on 12 volts.

This of course now means that I have to rebuild it and see if I can get back
to where I was before but because the coils I took out are wired so that
they power the motor even though this means that they were wired up the
reverse way these are wired due to the fact that they were CCW while the 6
pairs left are in fact CW I didn't think it would make a difference but I
did have these in as a parallel pair with a pair of existing coils and then
these 6 coil sets were series wired together.

No wonder I cant explain it to you im trying to tell you that the current
set-up is how it works and in fact what has happened is that its reacting
just as theory says it should except its a lot slower on 12 volts than I
think ive ever seen it even if it is only drawing 2.8 watts ( 12 volts at
0.24 amps ).

I have a pair of caps on it in series rated at 15 volts each and it easily
charges them up to 30 volts in about 30 seconds but only runs from them for
about 10 seconds, I have them now connected to a battery and the output says
0.01 amps at 12 volts and I note that when I disconnect the wires from the
motor to the charging battery there is no increase in speed as there is no
increase in draw when they are connected so this doesn't make any sense
either.

I guess at least the output indicates that its running at 90% 1.8 times 6
coils pairs 10.8 and 10.8 being 90% of 12.

Back to the drawing board I think

Garry Stanley

After this letter, Garry has not returned with any update on his motor since then. 

This is why a Prony brake test is needed to evaluate the efficiency, though you have 6 coil pairs and Garry earlier had 12 coil pairs.  Garry used 4 Ohm coils, two in parallel was 2 Ohms and the 12 coil pairs in series gave 24 Ohms total DC resistance. He used 96V total battery voltage on his bike when he claimed ou.

Good luck in testing!

rgds,  Gyula

[wattsup]

Regarding Lenz's Law and how to break it. I had this idea this morning and scramble quickly to get a drawing to explain the device.

Basically, this device would use both a coil to produce power and an impulse coil to push the magnet to the next quadrant. Might be fun to try. Hmmm.