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Author Topic: Reverse Coil Generator  (Read 6554 times)

Offline vineet_kiran

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Reverse Coil Generator
« on: September 29, 2011, 02:38:28 PM »


Just another crackpot idea!

Free Energy | searching for free energy and discussing free energy

Reverse Coil Generator
« on: September 29, 2011, 02:38:28 PM »

Offline gyulasun

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Re: Reverse Coil Generator
« Reply #1 on: September 30, 2011, 10:39:15 PM »
Hi!

Basically you have a transformer where I think Lenz law manifests as usual in transformers: the moment you load the secondary coil the flux created by the load current would work against the primary flux and this would reflect in an increased input current demand.  Can you agree?
It is ok that the switches will be on for a much shorter time than a normal AC input waveform cycle would last but then this would also result in less flux being maintained in the closed core i.e. output power suffers. This latter is not neccessarily a drawback of course.
I think you could replace the brushes with an electronic circuit called H-bridge which is able to change the polarity of a battery by using a square wave oscillator for driving such bridge and the switching speed can be varied by varying the input frequency, and only one primary coil would be needed. If need some help on H-bridges here is a link:

http://en.wikipedia.org/wiki/H_bridge  and a practical circuit
http://www.cadvision.com/blanchas/hexfet/np-s.htm

Gyula
Using such a H bridge switcing circuit does not bring any extra gain either, unfortunately

Offline vineet_kiran

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Re: Reverse Coil Generator
« Reply #2 on: October 16, 2011, 08:03:06 AM »
@gyulasun


I agree with you on your second point that when DC battery circuit is opened,  it may take some time to build the flux again when circuit is closed.  This should match with speed of the motor.

Regarding your first point,  I think working principle here is more like that of a induction coil (primary current is DC) than that of a transformer ( primary current is AC).  Does an induction coil draw more current from DC source when its secondary is connected to load?  I searched for the answer in net all these days but could not get the answer.  If it is so then this experiment is useless.

Thanks for the information about H bridge.

Regards,

Vineet.K.

Free Energy | searching for free energy and discussing free energy

Re: Reverse Coil Generator
« Reply #2 on: October 16, 2011, 08:03:06 AM »
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Offline gyulasun

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Re: Reverse Coil Generator
« Reply #3 on: October 16, 2011, 11:14:05 AM »
Hi Vineet,

Thanks for answering.  Trying to explain my first point on Lenz:

Your setup shown is a kind of transformer, supposed to operate by induction.  IT is ok that you assign a pulsed "DC current" input to the primary, induction still takes place as usual. We cannot speak about a continuos DC but a periodically intermittent current,  this means induction takes place whenever current is ON then OFF.
Now I do not think Lenz law cares about this intermittent operation: the very moment a load appears across the secondary coil and there is any inductive coupling (mutual inductance) between your primary and secondary coils, Lenz would manifests, unfortunately. It does so just because your load is present across the secondary when the induction happens: this already fulfills Lenz condition, unfortunately. (The magnetic flux of the current in the load i.e. the secondary coil's current would work against the primary flux, making the primary current increase and now this is exactly the same Lenz effect like happens in a normal AC operated transformer with a loaded secondary).

What do you think?

In your setup, Lenz could be greatly reduced by using very fast switches at the secondary coil. I mean when you switch on the primary current the fast switch in series with the load at the secondary is kept open and the moment you switch off the primary current you immediately switch the load to the secondary by the fast switch. With off the shelf components a switching speed of around 30 nanosec or a bit better is now practical for a careful home tinkerer.  Question is what gain could be had by this fast load switch if any?

Thanks,  Gyula

 

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