Analyzing Guanella Impedance Transformers

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  • Опубліковано 29 січ 2025

КОМЕНТАРІ • 21

  • @andrewmcfarland57
    @andrewmcfarland57 Рік тому +15

    A very balanced presentation that did not impede, but rather transformed my understanding of the subject. 🙂

  • @ghlscitel6714
    @ghlscitel6714 Рік тому +3

    Congrats! Yet another very good video. Applause!

  • @hisheighnessthesupremebeing
    @hisheighnessthesupremebeing Рік тому +1

    Hi Fez.. i hope you had a good Christmas and wish you a good New Year...
    Im always happy to se a new video from you.. but on the other hand then I knowI still have a backlog og your Videos i still haven't had time to sit down and enjoy/digest...

  • @minazulkhan8287
    @minazulkhan8287 Рік тому +1

    Thanks fesz, u are the one who deepen my interest in ltspice.

  • @vincei4252
    @vincei4252 Рік тому +2

    Happy New Year, FesZ.

  • @luminousfractal420
    @luminousfractal420 11 місяців тому

    where to find one 😅 had one blown to bits on a pcb. tiny thing

  • @bob_mosavo
    @bob_mosavo Рік тому +1

    Thanks, FesZ 👍

  • @raviselvans1963
    @raviselvans1963 Рік тому +1

    Happy New year 🎉💐💥

  • @woodrowbeckford7610
    @woodrowbeckford7610 Рік тому +1

    An interesting question is: at what frequency does the transformer cross over from transmission line mode to a more conventional mode where the line impedance is not a determining factor of performance.

    • @FesZElectronics
      @FesZElectronics  Рік тому +3

      I remember reading somewhere that this point is around when the line length is 1/10 to 1/12th of the signal wavelength. So when its shorter than this, it will work in the "conventional" mode and above you start seeing the transmission line mode

  • @aleksandartomic5515
    @aleksandartomic5515 Рік тому +1

    Hope you making money from all this videos, very useful they are

  • @lambda7652
    @lambda7652 Рік тому

    What would be the disadvantage of using the same magnetic core for all lines on the Guanella transformer?

    • @bob_mosavo
      @bob_mosavo Рік тому +1

      You would have the two (or more) magnetic fields interacting with each other if all lines are using a single magnetic core. This would not produce the same results as using different magnetic cores. The multiple magnetic cores keep respective multiple magnetic fields separated from each other.

  • @johnnytang7385
    @johnnytang7385 Рік тому

    Hi FesZ, wondering if you can analyze the DC Blocker circuit. I tried simulate the circuit with LTspice but I got rather strange result.

    • @FesZElectronics
      @FesZElectronics  Рік тому

      I think this is the first time of hear of this circuit; maybe you can give me some details on what you would like to use it for and when it is needed; also what sort of simulation issue did you run into?

  • @SteenGulstorff-u4l
    @SteenGulstorff-u4l Рік тому

    Nice video and very informative. But have you tried an LTspice simulation of 1:4 transformer with transmission lines, to see the low frequency dropoff ? It must be depending on lengths of the lines...

    • @FesZElectronics
      @FesZElectronics  Рік тому

      In the previous episode of this series - the one on Ruthroff transformers, I do show a method to simulate impedance transformers using transmission lines in which you can also see the low frequency drop off.

  • @dalesmith8666
    @dalesmith8666 7 місяців тому

    Do a search for the "Kellermann Balun". It might be of interest to you and others, possibly try to simulate it and figure out how it works, the theory behind it. I contacted a few people on the subject, not much was given out. I'm a retired RF engineer, and also a Radio Amateur for 50 years. If I get the time I will also build one to test. Mind you that it is a 1:1 Balun. From what I can understand, it will handle plenty of power, depending on the size of the coax used, eg: rg142 or rg393. Should be a perfect Balun for a Balanced Tuner, on the input side of course, 50 ohms unbalanced in , output balanced.

  • @troy6882
    @troy6882 Рік тому +3

    😃😄😁😆😅 5 Smile's.

  • @chrisscott1547
    @chrisscott1547 Рік тому

    Thanks for discussing this. You are forgiven for your pronunciation of balun since English is not your first language. (Balanced to unbalanced) Baal-un. Not Bail-un. Not bay-lun.