I have managed to produce a design within the falstad circuit simulator for an analogue "LED chaser" using an analogue multivibrator and 3 comparators inspecting the voltage of one side of the multivibrator.
Once I had completed it I decided to link all the circuitry to one supply (the pullups for the comparators were originally fed by a separate 5v supply) thinking this would alter the output waveform; it didn't (to my knowledge).
If I were to make this circuit in real life would there be any disadvantage to using a single supply? Please excuse this if it is a fundamental/beginner sort of question I am not academically trained in electronics
The circuit link is here (cannot produce schematic from simulator)