raivope - Melnichenko replication attempt

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  • Last Post 07 August 2022
raivope posted this 23 July 2022

Hi,

Here is my version of Melnichenko coil.

Big aircore primary and the smaller secondary that is on a core.

I used IRFP460 mosfet for switching, the power supply can go to up to 200V.

Currently using 120V and ca 24% pulse width, input is tuned to near 100W and output energy recovery is measured on the load1 that is collected from the primary (CEMF). Best efficiency I reached was 86% without the secondary load connected.

When connecting the second load, the load1 power recovery falls to 74.5W. I haven't measured the secondary power (lot of work), but this lightbulb is actually not so bright (picture shows it was bright). It looks like that the energy that the secondary lightbulb eats up is taken from the primary in a same amount.

Of course - I tested different coil positions as well. Tried to touch the secondary with a ground wire (no effect), of course - I haven't tested the grounding for the primary, because have to be sure that the PSU will tolerate that biasing.

What was interesting that with a secondary load there was some sweet spot of pulse width where lights were the most bright.

Connecting the secondary light does not change the input (or a few watts up)

I haven't cut the core in pieces yet as you can see. It would be interesting to test 2 or 3 cores in series where cores are isolated from each other. This was Melnichenko's recommendation as well.

 

 

Output power measurement is done by the scope by multiplying V * I in a real time. Input power is shown on PSU. Values/proportions are consistent over the different power range.

Hmm... this is how it is...

Best,

--Raivo

 

 

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raivope posted this 23 July 2022

Forgot to mention that I used the original Melnichenko circuit - positive rail switching.

I tried positive and negative bias switching. Then I isolated galvanically the power supply and then tried the grounding on positive coil switching side - also no effect.

I measured the second load power and it was about 10W. That is in a similar range as load1 dissipation ~85W and ~75W diff - without and with secondary load.

Raivo

 

raivope posted this 24 July 2022

Here are the scope shots from the primary coil. Yellow is voltage, purple is current, white is calculated power.
Frequency is 1800Hz. PW=24%. Input = 120V pulse. Cmean = ~18W means cycle_mean(power), which is more exact than normal mean.

18W means how much is lost over the cycle. All cycle input is ~100W.

 

Chris posted this 24 July 2022

Hey Raivope,

My Friend, this is BEAUTIFUL Work! WOW is all I have to say!

I am a firm believer that there is always room for improvement! But what you have here is the basis for Energy "Generation" in any Electromagnetic "Generator"!

Making this more Asymmetrical would make this better! Giving the Input less Duty Cycle and the Output a greater Duty Cycle, by increasing the "Generated" Voltage, then by holding the Current High, Pumping Current, Opposing M.M.F's, over a longer period, would benefit your Charge Pumping Machine!

Beautiful Work My Friend, very nice to see such progress here!

Best Wishes,

   Chris

 

P.S: Internet Attacks have bought about more Down Time lately, I am sorry for the desperate foolishness of the elite with a little E, that they are so desperately portraying! Its very obvious to so many that they are actively trying to stop us! They are just to damn Dumb To!

raivope posted this 07 August 2022

Hi,

Made another (centre, secondary) coil on 50mm plastic tube. This time core a bit shorter and more layers.

I added core material inside later, so I caught figures as well - 6.7mH (aircore) went up to 22.5mH iron core (3.3 times). I tried ferrite as well, but it reached only 15mH.

Chris was right - there was a room for improvement: I managed to increase the primary efficiency from 86% to 93%!

Nothing interesting much about tests, a quick test showed that the secondary eats up the primary energy as before. Now I have two secondaries, more serious tests to follow later. As I have now a big primary and two independent secondaries... mmm... it can become POC as well.

What I can suggest to others is that when you add load to the secondary and notice the increase in the primary current is because the CEMF did not stop (I mean, a new pulse comes in when CEMF has not ceased) because of the lowered impedance (even despite low 25% PW), so adding a capacitor in parallel to the load will mitigate this.

Raivo

 

Jagau posted this 07 August 2022

Hey raviope
I had not seen your essay on the melnichenko effect.
Well done and a good recommendation at the end of your post


 so adding a capacitor in parallel to the load will mitigate this.


Interesting to follow, thank you
Jagau

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