Newbie learning about transistors here. I put this circuit together to see the transistor's functionality as a switch and "inverter". I thought that, if the switch is on, the LED would turn
NPN Transistor Inverter Circuit | Sully Station Technologies
5pcs New 3dd207 To-3 Gold Seal Triode Inverter With Npn Power Transistor Iron Cap To3 - Integrated Circuits - AliExpress