“驯服”振荡运算放大器 Taming the Oscillating Op Amp Bruce Trump Last week we looked at two very common reasons for oscillations or instability in op amp circuits. The ultimate cause of both was delay or phase shift in the feedback path. Review it here. I confess that I had intended to discuss cures for both circuits this week. But to keep these blogs bite-size, I think it’s best to cover just one this week. (I must control my enthusiasm!) A simple non-inverting amplifier can be unstable or have excessive overshoot and ringing if the phase shift or delay created by the op amp’s input capacitance (plus some stray capacitance) reacting with the feedback network resistance is too great. You may be able to make some improvement by reducing stray capacitance at this no……