Optocoupling devices work as logic level changeovers between two circuits, It has the ability to block noise transfer across the integrated circuits, for isolating logic levels from high voltage AC line, and for eliminating ground loops. Optocouplers become specifically useful where an electrical signal is required to be sent across two circuit stages, but with an extreme degree of electrical isolation across the stages. Objectives After completing this module, you will be able to: Discuss the basic. An optocoupler, also known as an opto-isolator, is an electronic component that transfers electrical signals between two isolated circuits using light. It typically consists of an LED (light-emitting diode) and a photodetector, such as a phototransistor, housed within a single package. In this guide, you'll learn how they work and how you can use one in your own projects. They use light to pass signals between circuits.
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