This simulation demonstrates the difference between an amplifier and a comparator using an operational amplifier. In the amplifier configuration, the feedback resistor is connected to the inverting input, providing negative feedback, which stabilizes the circuit and ensures the op-amp produces a faithful, linear amplified version of the input signal without distortion. The output waveform (green) clearly shows the sinusoidal input signal amplified in proportion to the gain set by the resistor ra

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