Recommended · for beginners
EEVblog #748 - How Do Transistors Work?
Why people recommend it
Dave Jones' EEVblog explainer on how bipolar transistors actually work at the junction level, often handed to beginners puzzled by the basic NPN picture.
Watch for: More detailed than the usual beginner explanation
In their words
David L Jones can tell you much more about Semiconductors and why they work like this.
Asmyldof on electronics.stackexchange.com, Jun 2015. CC BY-SA.
Dave Jones is the man you need to see: [video] Just watch that video (and all his other videos as well) and become a 1st rate engineer:-)
Bimpelrekkie on electronics.stackexchange.com, Jun 2015. CC BY-SA.