What is the difference between PNP and NPN when describing 3 wire connection of a sensor? | Schneider Electric USA
![power electronics - question about signals from NPN - 4 -wire proximity switch - Electrical Engineering Stack Exchange power electronics - question about signals from NPN - 4 -wire proximity switch - Electrical Engineering Stack Exchange](https://i.stack.imgur.com/02kkv.gif)
power electronics - question about signals from NPN - 4 -wire proximity switch - Electrical Engineering Stack Exchange
![M12 Inductive Proximity Sensor, 3 Wire, Non Flush, NPN NO, Make: DA, Model: N4ER1 : Amazon.in: Industrial & Scientific M12 Inductive Proximity Sensor, 3 Wire, Non Flush, NPN NO, Make: DA, Model: N4ER1 : Amazon.in: Industrial & Scientific](https://m.media-amazon.com/images/I/51Z5VsPUKjL._AC_UF1000,1000_QL80_.jpg)
M12 Inductive Proximity Sensor, 3 Wire, Non Flush, NPN NO, Make: DA, Model: N4ER1 : Amazon.in: Industrial & Scientific
![power electronics - question about signals from NPN - 4 -wire proximity switch - Electrical Engineering Stack Exchange power electronics - question about signals from NPN - 4 -wire proximity switch - Electrical Engineering Stack Exchange](https://i.stack.imgur.com/MdWjI.jpg)
power electronics - question about signals from NPN - 4 -wire proximity switch - Electrical Engineering Stack Exchange
![pic - How to connect a Inductive Proximity Sensor Switch NPN DC6-36V to PIC18F4550 5V - Electrical Engineering Stack Exchange pic - How to connect a Inductive Proximity Sensor Switch NPN DC6-36V to PIC18F4550 5V - Electrical Engineering Stack Exchange](https://i.stack.imgur.com/libiH.jpg)