I'm relatively new to electronics and I'm trying to understand how to use transistors, but I seem to be misunderstanding something.
I'm trying to implement a transistor switch as described in Electronic Formulas, Symbols & Circuits on p 118. The diagram above is based on my understanding of how the circuit should look if I want the LED on when the switch is high.
Based on my understanding of the first diagram, and the diagram shown in the book, I think this second schematic should turn the LED on when the switch is low. But I also see a basic LED driver with the battery, resistor and led, which seems odd to me. When I actually wire this up on a breadboard, I see that the LED is on for either position of the switch, and that it's actually brighter when I turn the switch on high.
Do these schematics actually function as I believe they should thus I am failing to implement it correctly, or am I misunderstanding something fundamental?
EDIT The resistors should read 1K in the diagrams, not 100.