Confirming the Delayed Lenz Effect

[gotoluc]

Just a more practical question that bugs me regarding this MOT experiment:
Why is a single LED surviving in this setup up?
I would expect the voltage at the secondary to be a few KVolt if I look at the difference in inductance between primary and secondary impedance.
Probably due to the high resistance of the secondary winding?

Keep in mind that the Input to the Primary is in the 10 to 12 Volts RMS AC range (Signal Generator Output) so the Secondary should also output much less. I would also agree that much power is lost in the High Resistance of the Secondary.

Luc

[CRANKYpants]

Hi all

Special thank's to Gotoluc for his experiment.
So i tried a replication and it seems to work very well.

I wonder if ,( as it has already been proposed by a user i don't remember the name sorry), we placed an amplificator (for example a HI FI ampli) between the signal generator and the Mot if we could increase the effect and test more power. What do you think ? Any idea Thane ?

Thank's to all for sharing this very interesting stuff.

Good luck at all

Laurent

http://www.youtube.com/watch?v=vt9tqQfYpmk

DEAR LAURENT,

GREAT JOB!

CAN YOU REDO YOUR VIDEO BUT EXPAND YOUR SCOPE WINDOW SO WE ONLY SEE 1/2 OF THE SINE WAVE SO WE CAN SEE WHAT THE PHASE SHIFT IS AT 2:23 IN YOUR VIDEO?

ALSO EXPAND THE VOLTS / DIV SO THE LINES ARE STARIGHT UP AND DOWN PLEASE.
I WANT TO SEE IF THE SHORT PRODUCES A 180 DEGREE PHASE SHIFT WITH A ZERO POWER FACTOR SINCE A SHORT IS AN INFINITE PURELY RESISTIVE LOAD?

THEN TRY TO "TUNE" YOUR FREQUENCY TO SEE IF YOU CAN GET 90 DEGREES OUT OF PHASE?

BTW ANYONE MEASURING POWER FACTOR OR PHASE SHIFTS SHOULD ALL BE DOING IT THIS WAY SINCE WE DON'T NEED TO SEE THE TOPS OF THE SINE WAVES. 
http://www.youtube.com/user/ThaneCHeins?feature=mhee#p/u/17/5KfwiXJ8apk

CHEERS
T

[DreamThinkBuild]

Hi All,

Some good work going on here. Could you please try a 10ohm power resistor for measuring the current. I've been fooled too many times when measuring output with LEDs.

Hi DeepCut,

That is a great setup and can clearly see the current drop. You're right diametric magnets are the way to go one shaft can hold multiple of them, lets say 6, pulse 2 of them and collect off 4. 

[gotoluc]

DEAR LAURENT,

GREAT JOB!

CAN YOU REDO YOUR VIDEO BUT EXPAND YOUR SCOPE WINDOW SO WE ONLY SEE 1/2 OF THE SINE WAVE SO WE CAN SEE WHAT THE PHASE SHIFT IS AT 2:23 IN YOUR VIDEO?

ALSO EXPAND THE VOLTS / DIV SO THE LINES ARE STARIGHT UP AND DOWN PLEASE.
I WANT TO SEE IF THE SHORT PRODUCES A 180 DEGREE PHASE SHIFT WITH A ZERO POWER FACTOR SINCE A SHORT IS AN INFINITE PURELY RESISTIVE LOAD?

THEN TRY TO "TUNE" YOUR FREQUENCY TO SEE IF YOU CAN GET 90 DEGREES OUT OF PHASE?

BTW ANYONE MEASURING POWER FACTOR OR PHASE SHIFTS SHOULD ALL BE DOING IT THIS WAY SINCE WE DON'T NEED TO SEE THE TOPS OF THE SINE WAVES. 
http://www.youtube.com/user/ThaneCHeins?feature=mhee#p/u/17/5KfwiXJ8apk

CHEERS
T

Hi Thane,

here are a few more Shots to better see the shift. I tuned to Less current and expanded Volts Division to Max.

First shot is Normal Probe setup on Primary input and Second Shot I Only moved the Voltage probe across the 10 Ohm bulb.

Interesting to see that there is not much Phase Shift on the Primary when the Current is at Minimum but when you see the Second Scope shot with the Voltage Probe connected across the load it is perfect 90 Degrees Shift... or is that 180 Degrees Shift?
Anyways, I think that is what is important!... don't you think?

Luc

[gotoluc]

Hi All,

Could you please try a 10ohm power resistor for measuring the current. I've been fooled too many times when measuring output with LEDs.

Hi DreamThinkBuild,

I also tested with a 10 Ohm Resistor and the result is the same.

Please read my new Posts and you will see

Luc