There is an easy trick for finding out whether a circuit with a feedback loop has a possibility of oscillating or not. Let's look at a few example circuits. The trick is basically to look a the phase shift caused by components around the loop.
Aaron Danner is a professor in the Department of Electrical and Computer Engineering at the National University of Singapore.
http://danner.group
Video filmed and edited by Cheryl Lim.
@randomcheryl