[sdiy] generate 0v from out of nothing..

[pfperry at melbpc.org.au]

"Nils Pipenbrinck" <np at inverse-entertainment.de> wrote:
> Isn't there a old analog-guru trick to generate 0V from out of nothing? This
> would help me a lot because my biggest problem with the pcb is the
> ground-signal (which is used almost everywhere)-
> I think about using a free opamp in my TL074. 

This is cool, just wire an op amp as a follower. It is only useful if you don't already have an earth, though. There are even chips made specially for this aplication (the 'rail splitter' from TI).

paul perry melbourne australia
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