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Defining Sinking & Sourcing I/O

 
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Junior
Junior


Joined: 27 Jun 2012
Posts: 15
PostPosted: 27/07/2012 13:15    Post subject: Defining Sinking & Sourcing I/O Reply with quote
A good material about PNP and NPN inputs/outputs of a PLC card...

One of the most often misunderstood notions in control engineering is the concept of the
Sinking and Sourcing relationship between I/O devices. This document is meant to give a
solid understanding of these concepts, and clear up the definition issues of Sinking (NPN), and Sourcing (PNP), from both a technical and terminology perspective.

http://www.fluidairecompany.com/docs/pdfs/Q8answer.pdf
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