Answer by LvW for Feedback and phase shift on op-amps
Kathryn - with all respect: Do you really understand why and under which conditions an operational amplifier oscillates? For example, I miss the term "feedback" in your text. The key word for...
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Answer by Antonio for Feedback and phase shift on op-amps
This isn't exact. You must have the loop phase shift of 180° (and loop gain=1). This is Barkhausen criterion. You can understand this if you draw a block diagram like this: The equation is: $$...
View ArticleFeedback and phase shift on op-amps
I understand that if an op-amp has a phase shift of 180\$^{\circ}\$ and a gain of >1 it will oscillate and I'm trying to get an intuitive feeling for how / why. I've read around a bit, but I don't...
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