This simulation demonstrates the difference between an op-amp used as an amplifier and as a comparator. In the amplifier section, the feedback resistor is connected to the inverting input, creating a closed-loop system that stabilizes gain and produces a clean, amplified sinusoidal output. The waveform remains smooth because the op-amp operates in its linear region. In contrast, the comparator has its feedback connected to the non-inverting input, making it operate in open-loop mode. Since the o