Optocouplers and IGBTs

In this lab, students will be looking at two devices used as electronic switches: optocouplers and insulated-gate bipolar transistors (IGBTs). First, students will investigate the theory and behavior of optocouplers. Students will use optocouplers digitally and in a real circuit to control a high power loop from a low power loop. Students will also learn about IGBTs. First, students will look at detailed theory of optocouplers and IGBTs. They will then explore the importance of both electric devices. Finally, students will examine specific uses of optocouplers and IGBTs in real-world examples and answer short answer questions.


This is lab 8 of 14 in the course, Analog Electronics.


After completing this lab, students will be able to:
  1. Discuss isolation and its importance and use in circuits.
  2. Identify the important characteristics of an optocoupler and implement a control circuit utilizing one.
  3. Measure the threshold voltage of an IGBT in simulation.


  • Basic proficiency using Multisim Live
  • Basic proficiency using ELVIS III Instruments
  • Basic knowledge of breadboarding
  • Basic knowledge of components and their behaviors

Required Software

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Required Hardware

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