Uploaded November 2020 | Updated September 2026, 2 weeks ago
Some time ago I tryed to place different coils in- & outside of transmittercoil to see what happened to the signals and how to place them at best positions. I couldn't get a clear picture of what the things are to look for to determine the best position.
So I've changed strategy now and in this video I'm going to do an experiment where I hope to find the answer to questions like:
1) What is the "proper phasing" that Rick Friedrich talks about in his video's and books
2) What is the influence of the magnetic part from receiver to transmitter.
This last question came to my mind after experimenting with the high Q parallel tank circuit of single loop wire, where I saw that the led's where brightly lit and because of low capacitive coupling value could still have such big influence on the transmitter.
And now I hope to have found the answer to those questions and I'm going through every step to show you how I came up to the possible answer, and you can decide for yourself where I'm going wrong if that is the case.
I'm not experienced in this so the possibility of making a mistake is very high, if so please let me know how it should be done or the result interpreted.
Maybe a bonus to you and me from this video is the answer to the question:
3) What is "phase conjugate mirror"
If I'm correct we can look at this in the part of the video where I create 180° phase shift on the signal generator between ch1 & 2.
If it's the correct answer then you see it's important to also have same voltage to become 0V output with internal current flow.
Also to keep in mind:
When changing the voltage on transmitter in real life, the receiver voltage will also be influenced. In this video I'm not looking at the practical side, only what happens when one voltage comes different from the other. In reality we must change our receiver coil to give for example higher voltage to transmitter, but this is not the purpose of this video. It's only showing the end result voltage.
As you will see in the part of the video where I do voltage & phase shift at the same time, the phase shift is also changed by only changing the voltage. When there is no phase shift between the signals only amplitude is changed by changing the voltage.
If I talk about "what's allready in the receiver" it points to the voltage that we have when there is no receiver or repeater in place. We could see with the free oscillations that after an input pulse is given there's energy going back and forth, and it is this energy that I refer to when speaking of "what's allready in the receiver"
The moment we add a receiver and or repeater we're going to have influence and I hope in the way that I used to look at it in this video is usable to create good end results when adding receceivers or repeater coils to the system.
I'm going to study on the results and try to create a overview that could be helpfull.
When this is done I will add it in the comments of this video.
Some time ago I tryed to place different coils in- & outside of transmittercoil to see what happened to the signals and how to place them at best positions. I couldn't get a clear picture of what the things are to look for to determine the best position.
So I've changed strategy now and in this video I'm going to do an experiment where I hope to find the answer to questions like:
1) What is the "proper phasing" that Rick Friedrich talks about in his video's and books
2) What is the influence of the magnetic part from receiver to transmitter.
This last question came to my mind after experimenting with the high Q parallel tank circuit of single loop wire, where I saw that the led's where brightly lit and because of low capacitive coupling value could still have such big influence on the transmitter.
And now I hope to have found the answer to those questions and I'm going through every step to show you how I came up to the possible answer, and you can decide for yourself where I'm going wrong if that is the case.
I'm not experienced in this so the possibility of making a mistake is very high, if so please let me know how it should be done or the result interpreted.
Maybe a bonus to you and me from this video is the answer to the question:
3) What is "phase conjugate mirror"
If I'm correct we can look at this in the part of the video where I create 180° phase shift on the signal generator between ch1 & 2.
If it's the correct answer then you see it's important to also have same voltage to become 0V output with internal current flow.
Also to keep in mind:
When changing the voltage on transmitter in real life, the receiver voltage will also be influenced. In this video I'm not looking at the practical side, only what happens when one voltage comes different from the other. In reality we must change our receiver coil to give for example higher voltage to transmitter, but this is not the purpose of this video. It's only showing the end result voltage.
As you will see in the part of the video where I do voltage & phase shift at the same time, the phase shift is also changed by only changing the voltage. When there is no phase shift between the signals only amplitude is changed by changing the voltage.
If I talk about "what's allready in the receiver" it points to the voltage that we have when there is no receiver or repeater in place. We could see with the free oscillations that after an input pulse is given there's energy going back and forth, and it is this energy that I refer to when speaking of "what's allready in the receiver"
The moment we add a receiver and or repeater we're going to have influence and I hope in the way that I used to look at it in this video is usable to create good end results when adding receceivers or repeater coils to the system.
I'm going to study on the results and try to create a overview that could be helpfull.
When this is done I will add it in the comments of this video.
