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Recent content by amel1234

  1. A

    Shmitt trigger VS Transistor

    USB Data bus (D+ and D-)
  2. A

    Shmitt trigger VS Transistor

    Hello, can you please explain for me what is the différence between Shmitt trigger and transistor, especially in driving LEDs and in current consumption. Regards,
  3. A

    USB Communication

    Hello, There is somone (hardware engineer) who propose to me to use Schmitt Trigger with USB data line to drive Leds! I think that is not possible. can you confirm to me this? Thank you.
  4. A

    USB Communication

    Klaus, thank you so much for your response. the usb is USB2.0 low speed. the problem is that there is no USB communication with this schematic and there is no power in D+ and D-. I am a beginner in hardware design so thank you so much for the informations that you give it to me and I will take...
  5. A

    USB Communication

    Hello, I have a problem with usb communication. you will find attached the schematic. can anyone give me where is the problem? thank you. Regards
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