In order to keep the ZPM replications threads clean I've created this thread when questions can be asked and discussion related to ZPM's functionality can continue.
We can discuss here about the standing waves on ZPM's output, the waves propagation in the core and any subjects not directly related to those ZPM replications.
Regards,
Fighter
| "If you want to find the secrets of the universe, think in terms of energy, frequency and vibration." | ||
| Nikola Tesla | ||
Again BMW asked me the same question you ask:
bigmotherwhale posted this 11 December 2022
Congratulations Jagau, nice work
There is another option for measuring power and thats on the input side of the PSU, especially at higher power levels as no one can really argue with that imo, also you could try a large capacitor, I did some experiments where i could see how long it took for the cap to empty, my best results ie lowest power in took longer to drop in voltage, not that im debating your results of course...
Can you measure the freqency of the ringdown on the primary after the input pulse please?
Thanks
I answered him
Jagau posted this 12 December 2022 - Last Edited 12 December 2022
Hi BMW
Ok It was faster than I thought, for your answer I did a Cursor Measurements, the time of a complete period is 25 us or more precisely as displayed on the 39.68 Khz oscilloscope
jagau
It was the frequency of the ringdown that he wanted to know, he didn't calculate it, I gave him the frequency with my oscilloscope.
For the rest everything is in the thread I gave him the specs of the metglass, take the time to reread the entire post I feel like I'm repeating myself all your question are there.
jagau
Hello
What jagau has said is accurate, you just need the lenght of the core and a time.
Kind regards
Quoting:bigmotherwhale
Hello
What jagau has said is accurate, you just need the lenght of the core and a time.
Kind regards
I feel like nobody understands what I am trying to say. Alright, so let be formulate another question, a more simple one. How did you find out the propagation of the wave to be 8000 m/s, in that core that Jagau had. Just post the formula with the numbers in it. That is all I need. Simple and to the point.
Hello everyone.
@ Vasile.
You talk about magnetic propagation time
within a given material.
I dealt with this issue some time ago in
the old forum aboveunity, I don't remember where.
If you don't find it, let me know, I'll pick it up again.
YoElMiCrO.
Hi Yoelmicro
I think Vidura had already talked about it of wave propagation just here:
Jagau
Hello everyone.
@ Jagau.
Yes, Vidura has published on the subject!.
But it's not the same as what we talk about, we try
about the speed at which the field propagates
magnetic through a given material.
I think Vasile is trying to generate a standing wave.
magnetic inside the material, which in its time
perform.
YoElMiCrO.
Quoting:YoElMiCrO
I think Vasile is trying to generate a standing wave.
magnetic inside the material
Exactly. The thing that bothers me about electrical devices nowadays is that they do not take into account this propagation of the magnetic wave. Lets take for example the propagation of an electromagnetic wave in air which should have a speed of about 300000 km/s. For 50-60 Hz common grid wave, which is the standard in all countries in the world, we have a wave lenght (λ) of v/f (following the formula v= λ*f, speed=lenght of the wave*frequency), which is somewhere beetween 5000 to 6000 km. That happens in the air, but what happens in a transformer? How to calculate the speed of the magnetic wave in a transformer? I never heard anyone in electrical engineering talk about this relating to transformer theory. They talk about saturation of the core, histerisys, current density, etc. Every wave has a tendency to behave in a prefered way (at resonance) in a specific construction so taking it into account is important.
I am asking all of these questions because they may have some relevance to why this device may work. Maybe for those that work, in the core we have reflection of the magnetic wave and thus a standing wave which has constructive interference going on and not a destructive one, meaning the incoming waves + the reflection add and not cancel.
Hi guys,
In order to keep Jagau's ZPM replication thread clean so he can add information directly related to his replication I moved the discussions here.
We can discuss here about the standing waves on ZPM's output, the waves propagation in the core and any subjects not directly related to our members specific ZPM replications.
Regards,
Fighter
| "If you want to find the secrets of the universe, think in terms of energy, frequency and vibration." | ||
| Nikola Tesla | ||
Hi Vasile
Maybe this is the information that your search about
speed of electromagnetic waves in medium with relative permeability μr
Jagau
Quoting:Jagau
Hi Vasile
Maybe this is the information that your search about
speed of electromagnetic waves in medium with relative permeability μr
Jagau
I stumbled across this information a while ago, but still it doesn't explain how to to do it in my case. The formula inside the link is : v = c/√μrk . We need to find out v. We know c=300'000.00 km/s, μr (relative permeability) of metglass, in our case, is 1'000'000.00 but what about k (dielectric constant also called permittivity)? I searched for it and it is mainly used for dielectrics not metals. In metals, in most of the cases, that dielectric constant is infinity. (quote from http://large.stanford.edu/courses/2007/ap272/peng1/). Infinity would not help our formula. So where do we go from here?
I think that empirical evidence would help us more than a formula we have no idea what to put into it. A while ago someone sugested you put a capacitor in the circuit and see if that ringdown frequency changes. If it where to change, than that would not be the phisical resonant frequency of the core and it would simply be a lc type resonance. The phisical resonance of a material would not be affected by a change in inductive or capacitive characteristics of the circuit.
No one online at the moment
