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BJT stands for Bipolar Junction Transistor. It is a three-terminal electronic device constructed of doped semiconductor material and may be used in amplifying or switching applications.

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Resistor for open-collector transistor

I have an encoder; the circuit is in the image below: The one that I’m interested in is the PNP one. I want to use a 0-5 V digital voltage, the datasheet says this: Applied voltage: 30 VDC max. Sour …