I know that a transistor is 2 diodes joined at the hip.
But if I wanted to prove that to myself, what variety of diode would make for a good experiment. Let's say I wanted to work in 5v sort of range, both on the high side of the collector for the load and on the base to switch it. Low current, say switching an led with series resistor.
I imagine that the diodes in a real transistor are different from each other; if not the collector and emitter would be interchangeable.
TIA as always,