PNP versus NPN sensors - Chief Delphi

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PNP versus NPN sensors

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#16

06-02-2016, 12:08

Ether

systems engineer (retired)

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Join Date: Nov 2009

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Re: PNP versus NPN sensors

Quote:

Originally Posted by SuperBK

A more reliable way than relying on a voltage divider and two resistors pulling against each other is to use an opto-isolator with a NPN output to invert the signal.

Could a simple (and quite inexpensive) NPN transistor be made to work?

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