In this episode we look at the optocoupler or optoisolator as it's also known. This little device is great at isolating voltage and noise from one circuit to another, and it can even be used to translate voltage levels. We'll dive into how to go about biasing both the input and output of the optocoupler. Then we'll breadboard a demonstration circuit, including use of a schmitt trigger to give our circuit a snappier response time, and also look at the results on an oscilloscope.
