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Recent content by Big_Joe2

  1. B

    Open collector output arduino with led with PLC inputs problem

    Inserting a rectifier diode in series with led solved the problem. I've been correcting the scheme, please let me know if I've chosen good LEDs
  2. B

    Open collector output arduino with led with PLC inputs problem

    Is inserting a rectifier diode in series with a led to solve the problem?
  3. B

    Open collector output arduino with led with PLC inputs problem

    Hello Please, let me know if the diagram is correct. Arduino hands out a transistor which in turn drives the input in the PLC. The PLC responds to a short to ground. The question is, why, despite the lack of the signal from andurino in the PLC, the entry at random moments is violated? The LED...
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