1. The problem statement, all variables and given/known data Trying to figure out what this opamp does but can't pinpoint it. 2. Relevant equations 3. The attempt at a solution The one with the capacitor looks like an integrator. I attempted to build this circuit to see what it does. At node B I saw a triangle repeating waveform, node A gives a square oscillating waveform and C is some sort of horizontally flipped RC curve which can been seen with the file I attached. Anyone have any idea the name of this circuit?