I'm working on a project involving a PNP transistor and I'm running into a bit of confusion about calculating the base resistor. The emitter voltage can vary quite a bit, ranging from 5V to 28V. How do I go about finding the right base resistor in this situation? What factors should I consider?
1 Answer
To figure out your base resistor, start by identifying the base current you need and the base-emitter voltage (Vbe). Make sure you know the minimum voltage to turn on your transistor. Once you have those, you can apply Ohm's law to get the resistor value you need.
I checked the datasheet and saw Vbe saturation around 1.1V. How do I calculate the actual base current from that?