A sine wave is an S-shaped waveform defined by the mathematical function y = sin x. It is depicted graphically as two semi-circular curves that alternate above and below a center line.

And if you plot a graph of angle against its sine, you’ll get a familiar and pleasantly curvaceous picture: The sine curve. It rises smoothly from a trough of -1, through 0, all the way to a ...

According to textbooks, a sine wave is a wave whose form resembles a sine curve. Often in power electronics, we need a sine wave generator for some applications; a dc/ac power inverter, for example.