Confirming the Delayed Lenz Effect

[gyulasun]

effect of a short circuit on the secondary:

http://www.cliftonlaboratories.com/ferrite_transformers.htm

Hi wings,

thanks, very good link.
qoute from the link:

"Considering our simple transformer model, the effect of a short circuit on the secondary is illustrated below. The short circuit effectively removes the distributed capacitance, the core loss and the primary inductance from the model, leaving only the series resistance and  the leakage inductance."

Gyula

[gotoluc]

@Luc,

Please lets do some calculation on the MOT experiment. In my calculation of the Lenz Delay video, you can see that we can use L/R.

So in the MOT experiment let assume that we are using: 25H as a secondary coil, with an internal reassurance of 300 Ohms. And that we are using 200 Ohms as a load connected to the secondary coil.

This would give us a delay of: L/R = 25/(300+200) = 50 mSec.
To develop a back EMF of around: 63%

If we are using 950Hz in this case, than one period will take you:
1/F = 1/950 = around: 1mSec.

So when you compare the 50 mSec with the 1 mSec, than you can see where the Lenz Delay is coming from...

And further, the secondary MOT transformer coil also has internal capacitance. So this internal capacitance in combination with the secondary induction will create resonance inside the secondary coil.

With Kind Regards, Overunityguide

Thanks Overunityguide for this explanation.
Looking at it from just this angle I can now understand why you have no concern for the Primary Inductance.

I will look into it some more

Luc

[Overunityguide]

Correction on my previous post:
In my previous post I wrote: internal assurance of 300 Ohms.

Of course this has to be internal resistance of 300 Ohms.
I am sorry about this, but it has to do something with my stupid auto complete function build into my mobile...

With Kind Regards, Overunityguide

Oh and Luc, I am glade that now you know what I am talking about...

[ffdxshow]

Hi everyone

i'm just lurking around here and read all previous posts. i know it all depends on the impedance of the secondary and the frequency. so what is the best capacitor value that give the best COP?

i'm building one too.

ffdxshow 

[gotoluc]

Hi everyone,

I can now confirm Overunityguide's Delayed Lenz Effect using my H-Bridge AC Circuit which outputs Square Wave AC from what ever DC Voltage I wish. The best part of using a DC source is I can accurately measure the current consumed using my special meter I built for pulse circuits.

Prior when I was using only the output of the Signal Generator and measuring the Current through a Shunt Resistor connected to my Scope I was not getting real current readings at the right Frequency.

With my new setup I can now see the real current and also now see the Lenz Delay is actually starting around 1,000Hz just like Overunityguide. No capacitors needed.

See the new video demo: http://www.youtube.com/watch?v=XNihEux8S1M

Luc