Confirming the Delayed Lenz Effect

[SchubertReijiMaigo]

If so what do you think the peaks are on the top of the waves

Luc

Harmonics distortion (maybe due to resonance and saturation of the core): you can see on the green curve also, and because you have "Zoomed" the MATHcurve (using high Volt/division the oscilloscope make the product of two and the deformation is "amplified" on the red curve, but nothing strange here, the most important is the red curve which is above the zero line: power doesn't return to source...

[gyulasun]

Hi Luc,

I still think the transformer core starts saturating (even though its primary AC current is just under 700 mA in your latest test when you had 22 Ohm shunt resistor in series with the primary coil).  The time-coincidence of the red scope waveform's spikey peaks with that of the green input current shows this I believe.

In the link below  you can see a scope shot on current shape through a saturating inductor (note: there is a misprint, D4 in the text below the schematic should read as D3).
Here is the link:
http://www.dos4ever.com/flyback/flyback.html#ind2 

What output power is the sine wave inverter manufactured for, just curious, I do not think you overload it.

Gyula

[nul-points]

If so what do you think the peaks are on the top of the waves

Luc

hi Luc

try slowly varying the frequency, either side of that shown in the above trace - is there a maximum in  the pk-pk o/p, nearby?

if so, select that frequency then slowly increase the i/p voltage from a lower initial value - do you get to an i/p voltage where those 'sharp peaks' suddenly snap into view on the regular waveform? (possibly accompanied by more noise from the trafo)?

i've seen something like this recently - will check

thanks
np


http://docsfreelunch.blogspot.com

[gotoluc]

According to your curve all the power is active here   
Look like also the power is reflected since the input (on DC side) is increasing, finally look like this experiment is failed. 

Hi SchubertReijiMaigo and everyone

An Electronics Engineer looked at the scope shots and noticed the math did not make sense.

As I said in my post when I turned off one probe the Math changed. But what I did not notice is the Math automatically changed to multiply Channel A to Channel A.

So you were looking at NOTHING real. You guys must be on drugs

I Edited the posts above with the correct scope shot, DC current reading and Shunt Resistor

So it looks like it is reactive after all

Luc

[CRANKYpants]

So it looks like it is reactive after all

Luc

GOD'S LITTLE KNOW 12th COMMANDMENT: "THOU SHALT NOT UNDERESTIMATE MASTER LUC" ~ GOD... 
WHICH COMES RIGHT AFTER THE 11th AND IS OFTEN OVERLOOKED FOR SOME STRANGE REASON? 

CHEERS
T