So, i want to use an Op Amp with inverting topology to invert -3,3v into 3.3v (gain of -1). when i simulated it as in the figure i've used single power supplies and it worked (even with 5v in simulation). But in the practice i've tried 5v,12v and 15v single power supplies and none of them made the op amp invert the signal. I've tried also with 2 9V batteries (connected in series) but it didn't work neither (i don't have a dual power supply). Apparently some people manage to make it work like this in the past. I also tried to make a non-inverting topology and voltage follower and none of them worked.
Is this failure related to the supply voltage? do i really need to get more voltage rail to rail?
Also, can i invert an negative voltage with a single supply op amp?
If so, what are the best op amps to do it?
Is this failure related to the supply voltage? do i really need to get more voltage rail to rail?
Also, can i invert an negative voltage with a single supply op amp?
If so, what are the best op amps to do it?
Attachments
-
12.7 KB Views: 53