A circuit, which can include several diodes, depending on the state of the various switches. Both regular diodes, LEDs and a Zener diode can be included. Play with it and discover, what the different diodes do and how they work. Have Fun! 🙂
NB: This circuit was inspired by Simply Electronics' series Basic Electronics part 6. (Or Electronics Basics).
Check also my other circuits about basic electronics and if you like them, please give them a thumbs up! 😉👍