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0 votes
2 answers
90 views

What is the safest way to control another circuit?

From my custom board with an MCU I need to connect to an Interlock Pin of another circuit. I have a lot of options, but I don't know what is better. Using an optocoupler, but I'm afraid the output ...
Knowledge's user avatar
  • 441
5 votes
2 answers
2k views

Using optocouplers at the end of a twisted pair

I am designing a dumb "isolation box" that is to sit between a computer and medical data acquisition equipment. The purpose of this box is to inject power and to provide communications and digital ...
Edgar Brown's user avatar
  • 8,476