Electronics by Prof. Rodrigo Varella Tambara on Instagram: "The three level sinusoidal PWM modulator works by generating an output wave that can assume three voltage states: positive, zero, and negative. This is different from the conventional sinusoidal PWM, which uses only two levels (positive and negative). By introducing an intermediate level (zero), the three-level modulator can produce a smoother and more accurate approximation of the desired sinusoidal waveform. . . . . . . . . . . . . .