This simulation compares inverting and non-inverting operational amplifier configurations using the same sine-wave input, making the behavior easy to see on the waveforms above. At a basic level, notice how the input signal is clean and centered around zero, while the outputs have higher amplitude. That’s the op-amp doing its main job—amplifying a small signal without changing its frequency. Looking closer at the inverting amplifier, the output waveform is flipped upside down relative to the inp