This simulation demonstrates the working of an inverting Schmitt Trigger using an operational amplifier with a noisy sinusoidal input signal. The top part shows the waveform analysis where the orange waveform represents the noisy input signal, and the green waveform represents the clean, squared output signal. Despite the noise in the input, the Schmitt Trigger effectively converts the signal into a stable square wave by applying hysteresis — switching between high and low output states only whe