The Gabriel Device, possible COP=8

[Mavendex]

Looks like I got some more to learn then.... on the close loop. Good thing internet is cheap

[Magluvin]

With any coil/inductor such as your Primary when pulsing, we get nearly all the power back when we cut the power. This comes back in the form of the back spike or BEMF. The rest of the energy losses get swallowed up with heat and a few other factors.

In a normal, or common transformer, if the secondary is loaded, the primary isnt able to take advantage of that bemf.
Maybe this transformer can do it. This is if the primary is pulsed, not just flexing from constant AC.

It is interesting though maybe... In a common transformer, the input to the primary increases as the sec is loaded harder. This means that the primary allows more current to flow as the sec produces current in a load.  So if we were to cutoff the primary say near peak and use a freewheel diode, as long as the sec current flows, the primary diode should concur. Possibly to finish off the cycle somewhat close to what the norm is. If so, did we save on input at all?

Mags

Just thoughts

[JouleSeeker]

In a normal, or common transformer, if the secondary is loaded, the primary isnt able to take advantage of that bemf.
Maybe this transformer can do it. This is if the primary is pulsed, not just flexing from constant AC.

It is interesting though maybe... In a common transformer, the input to the primary increases as the sec is loaded harder. This means that the primary allows more current to flow as the sec produces current in a load.  So if we were to cutoff the primary say near peak and use a freewheel diode, as long as the sec current flows, the primary diode should concur. Possibly to finish off the cycle somewhat close to what the norm is. If so, did we save on input at all?

Mags

Just thoughts

I've been thinking along similar lines, Mags and Mav and Clanzers, and I wish I knew more transformer theory, although I've taught university-level electrodynamics!   I've been learning more transformer science at a practical level,   such as reducing hysterisis losses and eddy-current losses.  I don't think Mr. Lenz's losses are inevitable either, but that will take more study.

Anyway, modern transformers approach 98% efficiency or so, and we would do well to learn how this is achieved, for even if we get a demonstrably OU device, it may still have unnecessary losses that will generate unwanted heat.


 
 

[SchubertReijiMaigo]

Hello everyone, finally I can connect in my vacation location.

I don't think Mr. Lenz's losses are inevitable either, but that will take more study.

Lenz law is not losses it's a counter EMF or rather a counter MMF, based of "Action-Reaction" law in conservative systems... But the difference is apparently with some config we can use this energy also and recycle it... For example 90% recycling will give you a COP of 10...

Anyway, modern transformers approach 98% efficiency or so, and we would do well to learn how this is achieved, for even if we get a demonstrably OU device, it may still have unnecessary losses that will generate unwanted heat.

Moderns  trafos, have this kind of efficiency because reduction of hysteresis loss, eddy, and copper windings, a funny thing is more the transformer is powerfull less it have losses !!!

@Mav, Yeah PF = 0 is when your power is only virtual (reactive power) this power circulating back and forth between the source and coil/capacitor, no real energy is consummed (except) R losses (P=R*I^2 losses)...

For the permalloy, after reflection you should be right, since it's easy to magnetise and saturate, everything to decrease input current (even reactive) is welcome !!!

What's happened when you heavy load or dead short the secondary, huge spark ? Voltage droop ? current limited by wire R and over heat ?

[Jack Noskills]

Related to this BEMF discussion, I want to share something I learned recently when I explored the Heins effect. Realized that BEMF is your friend, not the enemy. Just treat it correctly and it works for you, I try to explain this below.

I trashed few trafos, one large and 3 small ones. I took the E-I parts of laminated iron from the bigger (trafo from my old Amiga computer, science needs its sacrifices hehe) and three primary coils from smaller christmas light trafos. These coils were very thin wire, output rated to 20.8 watts and they were rectangular shaped, 15 mm * 27.5 mm hole size. There is easily over ten thousand turns in one coil and when it is used to feed a  christmas light hardly any current passes if there is no load. I put primary in the middle of larger E-frame and two secondaries sideways to primary in left and right side. When finished, those E-plates connect all three coils and after core of middle coil is filled up rest of core goes only between secondaries using only I shaped parts here. So there is alternate path that goes only between secondary coils, to get the Heins effect.

Before I managed to trash my voltmeter, I measured the voltage at secondary side to be about 80-90 Volts on each coil. I then connected secondaries together in parallel so I had only one output. I am quessing it was at higher voltage, enough to light a 220 v bulb but did not measure this. If coils are connected in wrong way then output is zero volts, no power.

When I put current though the primary and 40 w light bulb, the light is dim when there is no load applied. Then I placed 40 w light bulb at the output and result was nice to watch. The light on the primary side went down as the light on the secondary side was lit. When I took power using only one secondary coil the effect was gone, the light on primary side glow brighter when adding load working like a normal trafo. So those secondaries were aiding each other.

Next I put 350 watt electric saw as load (note the coils were rated 20.8 watts. I quess motor rated at 350 watts should not make a sound with 20.8 watts of power). When I press the start button little, the motor starts and light dimms little. When I press the start button more and more, motor runs faster and light dimms to a point it is no longer visible. Based on the sound I got it run about half the maximum speed, very nice. So the more load I take from this trafo the less it uses the primary side.

It seems that it created power on demand using mostly BEMF from those secondaries. The flux of one secondary goes to the other and since it has the same direction as the flux from primary it adds power, same happens with the other secondary. What I dont understand is why current in the primary side goes down though.

Now imagine what the output would be when using higher permeability material as alternate path between secondaries. Maybe someone could give a try using better materials. Mine was very quick and dirty hack using existing stuff that was just lying around unused.

I think Thane was fooling us a little, you can get much much more power that just 11 watts from this kind of trafo. Size of my version was only about 70 mm * 60 mm * 50 mm. I hope you understood my description of how I made this, no pics available.