#5 How to Convert a Square Wave to a Sine Wave

In this video, I'll show you how to convert a square wave into a sine wave using a basic LC low-pass filter. A square wave is essentially made up of a fundamental sine wave plus a bunch of higher-frequency harmonics. By passing the square wave through an low-pass filter (LPF), we can filter out those higher frequencies and keep just the fundamental sine wave. I'll walk you through the concept and show you how to set up the circuit.