Kapanadze Cousin - DALLY FREE ENERGY

[NickZ]

    T-1000:
    I don't have a problem with Mosfet heating, or component heating in the first place.  I don't even need a heat-sinks for the fets.  What is showing some possibly normal heating up is the yoke windings, instead.

 
Quote from: NickZ on Today at 04:13:28 PM   Neither the Ruslan nor Akula devices needed such a change.
 
quote from Verpies.
"I am not claiming non-dissipative clamps are needed.  I claim they are better.
Just like a Ferrari is not needed to get you to San Jose, but it is better than walking...

Quote from: NickZ on Today at 04:13:28 PM

Nor will the normal size primary wire fit on the yoke, if doubled, in any case.

That is the only disadvantage of non-dissipative clamps, but that disadvantage is mitigated by the lack of need to wind the double primary with the wire of the same diameter.

   Better? Than an already self running system? Well, that sounds like a lot of unproven assumptions, to me.
At least with this device. However, I will wait for any final proof of that.

  T-1000:  I'm not making unconstrutive comments. I'm waiting to see if any ones circuit is working, to self run.
It's just that there are a lot of unknowns, and many many diagrams, schematics, and unproven ideas regarding all of this.
And there's several guys now that are showing the "Effect", but not self running.
Which may mean nothing, as Hoppy suggests.

  As you have not shown your circuits working, as yet, to show how constructive it really is, and what it can actually do.
I have not been making any comments to you about that, one way or the other. 
Nor of the double primary coil clamp ideas, that Verpies mentioned, as well. Other than seeing it lighting up a 40w bulb, on the 3 turns circuit, so far. 
  But, I hope that you do have some luck with your circuit, as well as Itsu on his.
  Please forgive any rudeness on my part.
   
 
   "

[Hoppy]

   
I don't even need a heat-sinks for the fets. 

That's akin to flying on seat of your pants! 

[Void]

So no one knows of a good way to check the current status of patent applications?

[magpwr]

OK that is a valid concern and in my opinion, a greater one that the Gate-Source overvoltage, which can only happen due to bad driver design or the C_D-G Miller capacitance.

I think it is fine for Magpwr to use a TVS diode to protect the Gate-Source junction as long as the TVS diode does not add a lot of C_G-S capacitance and really clamps well below 20V.

The Drain-Source overvoltage can be dealt with TVS Diodes, Zener diodes, RC & RCD snubbers and even with Varistors, but all of these methods are dissipative and don't recycle the clamped-off energy back into the power supply circuit.

hi verpies,

This is my plan on how to recover the BEMF and use it to power PWM circuit and drive Silicon Carbide mosfet which needs around 22volts at the gates."Akula version of active recovery circuit"

I have tested the circuit of Akula and i was able to power TL494 PWM/interrupter circuit just by connecting the primary coil to (+) and only negative source is connected to circuit.No self run as i suspect Akula did meddle with fracture or cavity within ferrite core(Heating and cooling maybe).But it show 0.00Amps on my PSU.

But there is one possible problem if the BEMF is high and produce higher unwanted stepped up dc source which isn't my plan.

I am having headache on how to recover this BEMF safely from low voltage supply 24volts or 250volts dc.
At the planning stage in my head....

My plan is to put recovery diodes at the 2 mosfet drain and connect to 400volts PIO capacitors.Maybe also use quick Mazilli circuit to drive 6cm green toroid just to step down voltage to safe level for the PWM circuit without wasting too much time.

The PIO capacitor will be used to power my Tesla Transponder via recovered BEMF.But this is just my plan not tested yet.

[verpies]

T-1000:   I don't have a problem with Mosfet heating, or component heating in the first place.

Just because you don't have a problem with heating so much that it destroys your components does not mean that you don't have problem with heating wasting electric energy by converting it to heat.

Better? Than an already self running system?

The non-dissipative clamp system works better in clamping the voltage spikes responsible for destroying MOSFET's D-S junctions better than any other clamp system proposed so far.  That's all it does.
If you like these voltage spikes across your MOSFETs or want to use HV MOSFETs with higher R_DS-ON , just because THEY did it this way, then be my guest.

Well, that sounds like a lot of unproven assumptions, to me.
At least with this device. However, I will wait for any final proof of that.

It is not an unproven assumption.  Itsu's scopeshots clearly show that the non-dissipative clamps are clamping exactly where they should - namely at 2*V_CC + V_F. and you can barely see these HV spikes on his scopeshots.
I do not what you consider proof, but such scopeshots are that to me.

All of this discussion is about getting rid of the destructive HV spikes across D-S of the MOSFETs, not creating the "OU magic" somewhere else in the device.  My method so far has proven to be superior and more efficient with only one inconvenience (the extra winding, which can be thinner BTW).