Hi Konhead

It suffers from lenz too. It slows down the rotor. Also the output is given by the strenght of the backing magnet. It is interesting when putting behind the core only a washer: lenz is 2-3 times bigger and the output is half with the leds connected
I have tried FWBRS, and 1,2,3,4 diodes. In the vid is only a normal FWBR.

Hi Marius,

I knew about the patent you show a Figure from on the coil winding, it is US4806834 and if you copy and past the number 4806834 into this link http://www.pat2pdf.org/  you can freely download it in PDF file format.

Ok on you bifilar coils test with giving no or very little output when the windings use parallel guided wires, I expected it because my L inductance measurements on such bifilar coils in the past showed a few microHenry resultant inductance in series opposing connection when each of the coils alone were in the milliHenry range
The winding style the patent above suggests do not fully cancel the self inductance as much as the parallel guided wires in the bifilar do but as you found it suffers from Lenz too, this is what you mean above to Doug I think.

Gyula

Hi all
I wanted to see how to collect the backemf/recoil with a bidirectional mosfet circuit that also has pulswidth control to it too, this circuit using two pairs of bidirectional mosfets, and one pair is normallyOFF switchesON and the other is normallyON switchesOFF and each pair has its own halleffect, so the pulse widht is adjsuted by distance between halleffects...
Anyways I was wondering how to take the  backemf/recoil out when using this circuit - there being 4 seperate mosfets in it.... and turns out the only way to collect it, is through the mosfet "C" as shown in this drawing....logically you would think mosfet "D" being the last in line would be the one to "tap" but that one puts out nothing, and the diode and cap need to connect to mosfet "C" then the cap fills up super fast and the "fzzzzzt" sound from the motor coil dissapears too.

Hi Marius, Kone and Guyla!

Very very thanks for your draws and schematics in the previous posts, it's very help when not english tongue to understand, especially for such difference like Guyla's "Bifilard Cancelling coil" and Marius "Normal Series Cancelling Coils"

Cheers.

Hi guys

Today i have build a new rotor NNNN to test the new coil.
Playing with it, i have found some some anomaly about the sinewave.The coil is connected is series adding.
When the coil is under load, half sine doesn't ''bend'' like the other one or like in any normal coil. To make sure of that i have placed only one diode and to use only half sine.

1- new rotor hand made NNNN ( came out pretty good)

2- sine wave of the coil with no load

3- sine wave form with 4W light bulb connected (see the difference between positive and negative  sine?)

4- sine wave with FWBR and 4W light bulb

5- sine wave after the the FWBR and 4W light bulb

6- connection of the coils

When loading only the negative sine, there is allmost no difference in the sinewave.If you dont look clossly to the scope, you dont see it. The bad thing  is that lens is bigger (than loading only positive sine) and the output is less too.
I think that every one should build this type of coil for testing. There is one more cool thing about this coil but must do more tests to bee sure of it.