I have the following diagram in which a switch connected to a 5V source should control two PNP transistors. I've spent a few hours trying to further understand PNP transistors to better understand what I am doing wrong, but I still can't seem the get anywhere. The logic, as I understand it, should be as follows: SW1 is not conducting = Q1 has emitter connected to GND and is conducting = Q2 cannot connect the emitter to GND and thus is open = Vout is 0V.
- SW1 not conducting = Q1 conducting = Q2 not conducting= Vout 0V
- SW1 conducting = Q1 not conducting = Q2 conducting = Vout 3.7V
The problem I'm having is no matter what the state of SW1 is, Q1 seems to be at 3.7V on the collector pin. Curiously, Vout is also at 3.7V.
Thank you in advance for any help!