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English Translations » 历史存档[信息] » May I ask why a 2K ohm resistor needs to be connected in par

May I ask why a 2K ohm resistor needs to be connected in parallel when using the PI-3511 pulse card to receive passive pulse signals?

2016-05-10View Original

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Question: Why is a 2K ohm resistor needed in series with everyone’s PI-3511 pulse card when it receives passive pulse signals? What is its function? Could everyone discuss it?
Reply #22016-05-16
It should be the circuit breakage detection for that channel; as for the value in ohms, it depends on the type of signal – it’s usually several thousand ohms or more

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Translated at 2026-07-21 00:16:36

Original: https://bbs.hcbbs.com/thread-1585176-1-1.html

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