This circuit simulation illustrates waveform shaping from a square wave to a sine-like wave using passive components. A 1 kHz square wave input is applied to an LC low-pass filter formed by a 50 mH inductor and a 1 µF capacitor. The filter attenuates higher harmonics of the square wave, allowing mainly the fundamental frequency to pass through. As a result, the output waveform becomes smoother and more sinusoidal. Such filtering techniques are commonly used in signal conditioning and audio appli

This simulation is a Square and Triangle Wave Generator using two operational amplifiers. The first op-amp is configured as a comparator with hysteresis (Schmitt trigger) to generate a square wave, while the second op-amp works as an integrator to produce a triangle wave. The square wave output (green) continuously charges and discharges the capacitor through the resistor network, resulting in the triangular waveform (blue). The frequency of oscillation depends on the resistor and capacitor valu