Shorting coil gives back more power

[gyulasun]

Hi Romero,

Thanks for the update, very good progress indeed. I wonder if your other coils are similar to the the one taken from the fan motor?
Also, when you found the output from the coils is still not enough to run from a capacitor then you had shorting on BOTH sine wave peaks or only on a single single peak like in the scope shot?
Good idea to use the 240V/12V transformer for reducing the output voltage, this inherently does a kind of impedance matching. A transformer with several secondary coils would be even better of course. You would have to find the best position for the output coils to maintain an induced voltage phase coherence so that the individual voltage amplitudes would not reduce each other too much.
Final 'nagging' for now:  the best cap value is the 0.47uF you still use? If yes, then probably you hit on the correct one that 'fits' to your coil(s).

Thanks,  Gyula

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.

[romerouk]

When I position the coil I always have it shorted then move it to the position where looks that the system is not affected at all.The reed position is adjusted after the coil is in place and watching the oscope to get the short closer to the wave peak.
Having 2 reed switches close to each other will give more shorts resulting more power.
I will post another video soon but now testing all different ideeas it looks like a mess and is difficult to explain what is there.
I am also trying with different type of coil, thicker wire, but for that the reed is not good enough, the spark produced is too much and damages the reed in few seconds.
The solid state circuit to do the  shorting recomended by Doug is not working properly now.I have tried all circuits found and presented here.
Just having the circuit connected without having the hall closer to the rotor will increase the power creating something like a parallel sine wave but not spikes as the reed does.
Trying a solid state AC relay with only the 240v side connected will increase the power but no spikes.
The voltage jumps from arround 40v without anything connected to the coil, just the meter, it goes to arround 72v just by connecting the 240v terminals from the SS Relay. 
Loking at the oscope I can see that when adding the SS Relay I get a parallel sinewave, this is strange for me at this moment.
This is the effect I was talking about in a previous post, PARALLEL SINE WAVE.

[gyulasun]

Can you show a scope shot of the 'parallel' sinewave?

MAybe you have one of the FETs damaged in the meantime and now you find the shorting with them is not ok? (I apologize for asking this, lol)

It is intersting that if you used the two FETs with the reed switch controlling their gate-source from a 9V (or 12V) separate battery, you still have not had good results? I mean this circuit:
http://www.overunity.com/index.php?topic=10398.msg276701#msg276701

Because Doug wrote last October or November he had success with that circuit as a substitution for the direct reed shorting and now he moved to the FET driver chip with Hall sensor control to get rid fully of the reed.

A solid state AC relay normally have several Ohms ON resistance unless you have a more expensive type, if yes, perhaps this explain the unfavorable result with it?  Doug emphesized the ON resistance of the switch should be the minimum possible.

Thanks,  Gyula

[romerouk]

@gyulasun
Picture with the wave when the SS AC Relay is connected.When nothing connected I get a normal single line sinewave.The voltage is almost double when the AC SS relay is connected.As I said before, I connect only the 240v side nothing on the input of the relay.I have more than one AC SS Relays and all are doing the same, normaly the system should not do anything without input to the relay.
Picture with the both relays I use, AC for shorting and DC to dump the charge from the capacitor, once for every rotation.
I hope there are some ather people to test what I am saying, I am very courious to see...

[IotaYodi]

Loking at the oscope I can see that when adding the SS Relay I get a parallel sinewave

Dont know if this applys to your problem but I thought Id throw it out.

The sum of multiple phasors produces another phasor. That is because the sum of sine waves with the same frequency is also a sine wave with that frequency:
http://en.wikipedia.org/wiki/Phasor