1850 Watts free energy power ? New GEGENE circuit by JL Naudin shows COP = 2.8

[hartiberlin]

Hmm,
I still have 2 questions:

How do they regulate the power output of the eddy current coil inside the cooker via the LCD display control ?

Is it this kind of envelope AM modulation they use to set the used power level ?
How is the envelope changed to set the power levels ?

In the circuit diagramm user targor posted,  it seems they have NO separation of the
grid power to the coil,
so be careful not to touch the transmitter coil, as it coul kill you to touch it, as there is no separation to ground..
No transformer used there...


2. Question: WHy does the aluminium cooler plate get not hot inside the cooker ?
It should also get hot by eddy currents...

Is it not made out of full aluminium metal ?

Many thanks.

[tagor]

 

Is it this kind of envelope AM modulation they use to set the used power level ?
How is the envelope changed to set the power levels ?

the envelope does not change it is 50 hz

but the frequency ( ~ 20khz ) change with the load ( or inductance of the load )

2. Question: WHy does the aluminium cooler plate get not hot inside the cooker ?
It should also get hot by eddy currents...

Is it not made out of full aluminium metal ?

i think it is a security to do not burn you ( not full aluminium )

[TinselKoala]

The "depth" of the envelope modulation is how the output power is set, I think.
And the cookware that works with these cookers is ferromagnetic; all-aluminum pans don't work as well or at all, according to what I see on the internet. Supposedly you should check your pots and pans with a magnet; if the magnet sticks to the bottom they are supposed to work with the inductive cookers. You can even get special flat, magnetic, plates to go on top of the cooker so you can use your regular all-aluminum pans on the cooker.

ETA: I don't know if this is because of eddy current, or because the cookers need some kind of signal to start up.

ETA2: All the wal-mart and target stores in my area are sold out of the lower-cost models of these cookers. Either there is a lot of cooking going on.... or there are a lot of people doing FE research with them !!

[tagor]

The "depth" of the envelope modulation is how the output power is set, I think.

The "depth" of the envelope depends of the 20khz modulation frequency ( 18 to 20 khz )

[TinselKoala]

The "depth" of the envelope depends of the 20khz modulation frequency ( 18 to 20 khz )

Hmmm.... OK, maybe I am starting to understand. I don't quite see how the HF frequency could control the amplitude (what I called "depth") of the envelope.... but perhaps the explanation in the .pdf has the answer.

In the .pdf paper linked on page 2 by Wings, the explanation for the envelope seems to be that it is a deliberately allowed ripple which helps power factor correction, if I am understanding properly.
http://inpressco.com/wp-content/uploads/2012/02/Paper5126-132.pdf

The AC main (220V, 50Hz) is routed through EMI / EMC filter
before being fed to the bridge rectifier. The output of the
rectifier is passed through an inductor and a capacitor C.
The capacitor C is of small capacity (5uF) so that the DC
voltage (Vdc) across C does not get leveled. This in turn
also helps to improve the overall power factor of the
system. The return path of the high frequency current is
through this capacitor C as at high frequency C offers
negligible capacitive reactance ( ), where f is in KHz
range, hence, the capacitor C acts as a short circuit and
allows high frequency current to flow. It also acts as
higher order harmonic filter at the same cost.

The depth of heat
penetration on cooking pan is inversely proportional to
operating frequency and the operating frequency is
inversed of operating time period. So, by changing the
IGBT ON-OFF time operating frequency can be changed
and thus the heat penetration on cooking pan can be
controlled.

So it would appear that the envelope is a deliberately allowed ripple at constant frequency (mains) and amplitude (output of FWB in supply) and the power level is controlled by frequency of the HF oscillation within the envelope .... you could think of this as the number of HF cycles included in one envelope cycle, I guess.  Does this seem correct to you?

It's making more sense now... I think ...  Thanks, tagor.