Electronics tutorial - Separating Common Mode and Differential Mode signals

แชร์
ฝัง

ความคิดเห็น • 38

  • @wueric4076
    @wueric4076 2 ปีที่แล้ว +2

    Good to see you demonstrating Math menu functions of oscilloscope. I remember the old HP3577A Network analyzer have DEFINE MATH functions for multi-receivers in frequency domain although it's not spectrum analyzer.

  • @pietmatsobane6790
    @pietmatsobane6790 4 ปีที่แล้ว +5

    Thank you Sir!... Running the experiment in real physical oscilloscope made things even more interesting 🕺🕺🕺

    • @FesZElectronics
      @FesZElectronics  4 ปีที่แล้ว +1

      I was really surprised just how well it turned out in real life; I was afraid that the simulation would be just too ideal in comparison with the practical circuit.

  • @iamswastik
    @iamswastik 2 ปีที่แล้ว +4

    I don't know why your subscriber number is still stuck at 18K. You deserve way more subscriber. Excellent video. Thank you!

    • @isaaccerrato1528
      @isaaccerrato1528 หลายเดือนก่อน

      It's 60.5k now!! Consider that electronics is not a topic that a lot of people on TH-cam will look for.

  • @DiegoColl44
    @DiegoColl44 4 ปีที่แล้ว +7

    Your videos are very great, I already shared your channel with all my colleagues. keep creating quality content. Thank you. Saludos desde Argentina..!!

  • @sidravi3885
    @sidravi3885 4 ปีที่แล้ว +6

    your videos are simply amazing.... I have learnt so much from you .....can you make a video on how common mode noise is generated in typical high frequency electronic circuits?

  • @louco2
    @louco2 4 หลายเดือนก่อน +1

    Great as usual!
    .
    ----- )
    .
    Thank you FesZ Electronics!

  • @ihtsarl9115
    @ihtsarl9115 2 ปีที่แล้ว

    Thank you for posting this video it would have been nice to show how to filter out these noises

  • @arthurm7846
    @arthurm7846 ปีที่แล้ว +1

    This channel is a gem, great video! Thanks a lot!

  • @raohamza4484
    @raohamza4484 2 หลายเดือนก่อน

    Hello, Nice vidoe. I have simulated a filter for a noisy DC power supply where I considered using a common mode choke first for common mode noises, followed by a ferrite bead with some capacitors, and finally a Pi filter with a 127kHz cutoff. I connected a generator to simulate how effective my design circuit is. I used the generator you created in the video and connected it to the EMI/EMC filter I designed, placing it on the power supply's positive (+) and negative (-) lines. On the output, I plotted the dBuV against the magnitude, essentially performing an AC analysis. My filter response is very good, with attenuation exactly at 127kHz, where it drops off significantly. My question is: for simulating the filter with a high noise input power supply, is the generator you designed sufficient? If it is, what would be the best way to analyze the filter's output? Specifically, how do I interpret the dB to magnitude graph to confirm that my filter is working effectively?

  • @khalidchigane3540
    @khalidchigane3540 4 ปีที่แล้ว +1

    first of all, thank you for your video it's very helpful, I just have a question about the source of the common-mode voltage as we know we apply just the differential voltage between the two wires but the common one exist too

  • @sarperarslan3085
    @sarperarslan3085 4 ปีที่แล้ว +2

    Mr. Thank you for that great explanations

  • @Bazz1TV
    @Bazz1TV ปีที่แล้ว

    in an unbalanced system, is it enough to connect oscilloscope channel A to circuit signal, channel B to circuit ground, with scope grounds floating, creating a floating differential pair to perform MATH functions on to learn CM and DM properties?
    I am looking for a budget friendly way to measure improvements in CM noise when applying filters, with the major tools available being oscilloscope and function generator.

  • @rogeradi
    @rogeradi 2 ปีที่แล้ว

    I love to learn from you. Very informative.

  • @gianluca_bartolocci
    @gianluca_bartolocci ปีที่แล้ว

    good morning your videos are wonderful, do you happen to have one that measures the thd of an amplifier between the input and output Vsin signal) the classic settings I'm using don't work or in any case I find anomalies. grazie

  • @thunderbolt55
    @thunderbolt55 3 ปีที่แล้ว

    Amazing, thank you for this video. simple and precise. Interested watch your video measuring it on a spectrum analyzer

    • @FesZElectronics
      @FesZElectronics  3 ปีที่แล้ว

      More than a year later, I actually got to do that :D th-cam.com/video/fhPTnoNQG_A/w-d-xo.html

  • @jonnymakers9560
    @jonnymakers9560 2 ปีที่แล้ว

    differential noise and differential signals are different. Correct? It seems like common mode and differential mode usage depends on what we are talking about, noise, signal, rejection ratio etc. which makes it confusing

  • @brankelly1921
    @brankelly1921 4 ปีที่แล้ว +2

    Great video, thank you so much!

  • @robertthurman8412
    @robertthurman8412 8 หลายเดือนก่อน

    Hell FesZ,
    So, in the real world if you have a class I device or a class II device you would make these measurements with respect to chassis i.e. you would use two probes with each of their grounds connected to chassis? The two signals (sig1 and sig2) are representing the signal and return path correct?

  • @campbellsmith9849
    @campbellsmith9849 3 ปีที่แล้ว +1

    Why doesn't the DM noise also double when it is isolated? By subtracting the two lines, I'd expect something like 5-(-5)=10, or -5-5=-10.

    • @FesZElectronics
      @FesZElectronics  3 ปีที่แล้ว +2

      In the case of the CM noise, I was measuring the noise in reference 2 ground both times, so the values added up; with the DM, if its properly floating then the values in reference to GND would be half of the initial signal; both lines are oscillating in reference to GND, when one is increasing the other is decreasing and the total peak to peak never exceeds the initial input value - rather than having 5-(-5) the total would be 2.5-(-2.5)

  • @dominikworkshop6007
    @dominikworkshop6007 4 ปีที่แล้ว +2

    Very informative video!

  • @97mesut
    @97mesut 4 ปีที่แล้ว +1

    thanks so much

  • @akashtanwar1939
    @akashtanwar1939 4 ปีที่แล้ว +1

    This is good stuff.

    • @FesZElectronics
      @FesZElectronics  4 ปีที่แล้ว

      Thank you! I'm happy you are enjoying it!

  • @nahiakhan2135
    @nahiakhan2135 3 หลายเดือนก่อน

    ❤❤❤

  • @vigneshsiva1580
    @vigneshsiva1580 4 ปีที่แล้ว

    how to view the addition and subtraction of two channels on spectrum analyzer

    • @FesZElectronics
      @FesZElectronics  4 ปีที่แล้ว +1

      You can do that only if first you use a passive or active circuit that processes the 2 signals. There are some commercial products that can achieve this.

  • @andpe161
    @andpe161 3 ปีที่แล้ว

    Very good, but you stopped just before the most useful part!

    • @FesZElectronics
      @FesZElectronics  3 ปีที่แล้ว +1

      In the mean time, part 2 did come out - th-cam.com/video/fhPTnoNQG_A/w-d-xo.html

    • @andpe161
      @andpe161 3 ปีที่แล้ว

      @@FesZElectronics Perfect, thanks! I did search but with the wrong search term.

  • @j3s0n
    @j3s0n 2 ปีที่แล้ว

    Dutch?