I'm currently studying the "Piggyback" NPN Silicon Fuzz Face - Germanium Emulation as described here :
I ended with this schematic :
As far as I know, the base-emitter junction of a transistor acts like a diode. Do you think it will work if I use a diode in place of Q2 ? Or do transistors have magic properties I will miss ?
Thanks for extending my knowledge, as usual...