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Recent content by MB.ESK

  1. M

    [SOLVED] Problem With "Power Line Disturbances"

    Thank you very much . I'll test this way as soon as possible and report the result ... I can use body of machine for grounding as an earth at least . am I right ?? again, tahanks my freind. :smile:
  2. M

    [SOLVED] Problem With "Power Line Disturbances"

    THANK YOU. I CONSIDERED ALL OF THEM BEFORE BUT I CHECKED IT AGAIN.... :sad:
  3. M

    [SOLVED] Problem With "Power Line Disturbances"

    You are right! but I think I have considered all the things as you said, but for being sure I put my power supply schematic for you to check it please. my device is an industrial machine with a fairly big size. as you see . https://obrazki.elektroda.pl/4684567500_1447403196.jpg It has two metal...
  4. M

    [SOLVED] Problem With "Power Line Disturbances"

    Thanks for your answer. But i considered rf impulse in my design . So i used ferrit bead and emi filter (blm41pg102sn1 and nfm41pc204f1h3) befor and after swiching and linear regulators or in the entrance of board's powre supply. I used separated ground plate for noisy part and also for digital...
  5. M

    [SOLVED] Problem With "Power Line Disturbances"

    I have a question about "Power Line Disturbances" Is the last methode for suppressing Power Line Disturbances using "ups" ?? I USED ISOLATED TRANSFORMER AND LINE FILTER IN MY DESIGNING BUT WHEN I TURN ON SINGLE PHASE MOTOR(start/run capacitor) BY CONTACTOR (MANUALLY) MY BOARD (STM32F4-DISCOVERY...
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