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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