Shorting coil gives back more power

[gyulasun]

Hi Laurent,

With only using one FET the shorting cannot work because when the FET is supposed to be in the OFF state, its inherent body diode between the drain-source electrodes is still there and just clamps the AC half wave which is with forward voltage polarity to it, ok? This is why two FETs are used in series opposing direction with respect to the body diodes: whenever one of the diodes would be forward biased by the AC waveform, the other body diode would surely be with the reverse polarity to that AC waveform, hence no current can flow when the FETs should be in the OFF state.

Ok on your finding the voltage stays constant regardless of the rpm. I believe, for the time being, you do not have to bother with this, it is not sure at all whether this is going to be a drawback.

Maybe using several generator coils around the rotor is one way to increase output if you can find coil positions where the drag is the smallest like Romero hit on such position + reed switch position. It would be interesting to see in his shown setup whether using some more pick-up coils with their own reed switches, the input current would have remained also unchanged? 
In your case first I think a coil position ought to be found where the drag is at a minimum and you use the two FET shorting.  One thing I do not get with your latest shown setup is why you did not receive sine wave output when the FETs are OFF?  Or you receive it but just did not show it? You have received so nice sine wave output shown in your earlier videos and also you showed the shorting at the wave peaks caused 3 times as high spikes than the sine wave was. This is what you may wish to achive first with the two FET shortings, instead of the reed switch shortings.

MAybe using a coil with higher number of turns and making taps on it can give you more flexibility.  I know the cross over air core coils are a bit expensive to buy, maybe you have some left from the Ossie motor tests? (if I recall correctly, that is... ) 
By the way you may wish to insert some ferrite rod piece into an air core coil available from your junk box to increase output voltage so that you should not increase the number of turns which would increase copper loss. No problem for the cogging it will cause in a single coil case, later using some more coils also with cores the cogging can be minimized.

Thanks,  Gyula

Hi Gyula

thanks for input

now we are OK on the basic circuit. Just for info i tried the same circuit with only 1 FET and it doesn 't give good results.

So now i am trying to test different coils and core to see if i can increase the "produced shortage voltage" and the spectrum seems to be really large. as each system produces very different results . But so far the constant direction remains.
For a given system, the shorted pulsed  produced voltage stays constant at all rotor speed.
So to be very clear ,if the speed of the rotor increases, you get more pulses of the same voltage, but never  a higher voltage.

OK it is only the beginning and perhaps tomorrow will bring better ideas

Good luck at all

Laurent

[romerouk]

This is how the sinewave looks with reed and 0.47uf for the shorting.
I have more coils now and still the system remains not affected even if I leave all coils shorted.
The system charges the running battery but still not good enough to run from a capacitor.
I can get the system to accelerate when shorting the coils too.The arrangement of the coils arround the rotor is very important too.
Now I collect the power from all coils in a capacitor and dump it back to the battery once for every revolution.
Another small discovery is that if I use a 240/12v transformer and collect the power from the MOT fan coils to the 240v side and use the 12 volt side with a rectifier  to charge the battery it charges better than damping higher voltage and low amperage.

[woopy]

Hi Bolt

I am ready for take off ,simply send me the soft or proposal and we go
Thank's

Hi guyla

i am trying all the stuff i have , and has i sayd all works but at different ENERGY INPUT  PRICE . But what disturb me is that DOUG sayd that with the HIGH BYPASS AC cap it should decrease the LENZ effect what i can not detect at this point of my research. Any idea ?

Good night

Laurent

[woopy]

Hi  Romero

Bravo

and of course i am sure you will produce a video of this

and thanks

Laurent

[gyulasun]

... all works but at different ENERGY INPUT  PRICE . But what disturb me is that DOUG sayd that with the HIGH BYPASS AC cap it should decrease the LENZ effect what i can not detect at this point of my research. Any idea ?
...

Well, I am afraid you have to ask Doug on that details, sorry. In theory it sounds good that you use only the spikes energy and 'suppress' most of the generated sine wave coming from the coil.
Also maybe Romero could also comment whether he found a position for the coil and the reed where there was a minimal drag, first without the series capacitor, then with no drag with the series cap as this latter result turns out from his measurement video.

Gyula