Confirming the Delayed Lenz Effect

[gyulasun]

Lonny Like.   ;]

Cheap too.  What do you have for wire/turns?

Mags

The A_L value for the TX36/23/15 3E5 type toroidal core is 11400nH/N² 

This gives about 811 turns for the 7.5 Henry measured inductance
(formula is N=(L/A_L)^1/2

811 turns sound very much and probably filled up almost all the inner diameter or the toroid core. The 4.4 Ohm DC resistance for the 0.8mm (I considered 0.812mm for AWG 20 which has 33.31 Ohm resistance for 1000m length) copper wire gives about a wire length of 132 meter. Is this more or less ok, Luc?

Gyula

[Overunityguide]

Just thinking about it, this may be able to breath some life into a microwave transformer. Just need to find the freq of operation.  ;]

Mags

@Magluvin,
It depends on what Inductance / Impedance your secondary coil of this microwave transformer has... For sure it has to be high... But with my setup I am limited to 950 Hz, because that is the upper limit of my frequency drive controller.

But when you can go higher than 950 Hz, than your inductance / impedance of your secondary can be slightly lower, but still it needs to be way higher than the primary coil. But the laminations for higher frequencies needs to be also be thinner.

Mags, do you know what a normal inductance value would be for the secondary coil of a microwave transformer?

With Kind Regards, Overunityguide

Most Recent, Regenerative Acceleration Effect inside a Transformer:
http://www.youtube.com/watch?v=2YiRV1SUsgc

[gyulasun]

...
do you know what a normal inductance value would be for the secondary coil of a microwave transformer?
...

It must be in the several Henry range.  A google search brought this:
primary L=68.2mH 
HV secondary L=15.5H
(from this link: http://sci.tech-archive.net/Archive/sci.electronics.cad/2008-02/msg00082.html )

Maybe the laminations could work up to some hundred Hz for the older type transformers (nowadays there are ovens with switch-mode power supply to get the HV too).

Cheers,  Gyula

PS: just recall this pdf file member poynt99 uploaded that includes info on oven transformer, page 17:
Primary: R= 0.35 Ohms; L= 44.4mH
Secondary: R= 88 Ohms; L= 19.3H
(from this: http://www.overunity.com/index.php?action=downloads;sa=view;down=209 )

[Overunityguide]

It must be in the several Henry range.  A google search brought this:
primary L=68.2mH 
HV secondary L=15.5H
(from this link: http://sci.tech-archive.net/Archive/sci.electronics.cad/2008-02/msg00082.html )

Maybe the laminations could work up to some hundred Hz for the older type transformers (nowadays there are ovens with switch-mode power supply to get the HV too).

Cheers,  Gyula

PS: just recall this pdf file member poynt99 uploaded that includes info on oven transformer, page 17:
Primary: R= 0.35 Ohms; L= 44.4mH
Secondary: R= 88 Ohms; L= 19.3H
(from this: http://www.overunity.com/index.php?action=downloads;sa=view;down=209 )

Ok, thank you very much

With Kind Regards Overunityguide

Most Recent, Regenerative Acceleration Effect inside a Transformer:
http://www.youtube.com/watch?v=2YiRV1SUsgc

[gotoluc]

The A_L value for the TX36/23/15 3E5 type toroidal core is 11400nH/N² 

This gives about 811 turns for the 7.5 Henry measured inductance
(formula is N=(L/A_L)^1/2

811 turns sound very much and probably filled up almost all the inner diameter or the toroid core. The 4.4 Ohm DC resistance for the 0.8mm (I considered 0.812mm for AWG 20 which has 33.31 Ohm resistance for 1000m length) copper wire gives about a wire length of 132 meter. Is this more or less ok, Luc?

Gyula

Hi Gyula,

I had to pickup my Digital Caliper from storage to re-check the diameter of the wire. It is actually 0.50 mm with enamel coating. The DC resistance is correct @ 4.4 Ohms so you should be able to figure out the wire length and approximate amount of turns.

Let me know if something does not look right.

Thanks for your time

Luc