I see many references to input and output caps helping with "stability" and some outright references to preventing oscillation in both answers on this site, and even in some data sheets. I also have seen references saying that the 7805 is "inherently stable" in both answers on this site and even in some data sheets and app notes. Are the datasheets/people using the term "stability" confused or are there versions of the 7805 that actually can become unstable? If so, I would like to see an example of a circuit in which this would happen.
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