A not gate typically just inverts the signal, so that V would turn into GND, and GND into V. Is there a not gate using transistors that would switch GND into V, but not switch 0V into V? (preferably using common transistors like npn and pnp)
By GND I mean having it connected to the ground pin of the power supply, and by 0V I mean not having it connected to anything at all.