How do you calculate the output impedance of an op-amp circuit? Because if you assume an ideal op-amp has an output impedance of zero, wouldn't that mean that anything you do would not change the output impedance (since most impedance components are placed such that they are in paralle with the output reducing output impedance even farther? (that is, unless you placed something between the output of the op-amp and the load it's driving.)
Let's assume the op-amp can drive enough current through those impedances parallel to it's output to generate the correct output voltage.
Let's assume the op-amp can drive enough current through those impedances parallel to it's output to generate the correct output voltage.