Lesson 5/1729%
MODULE 05

Different Types of Optocouplers

A guided tour of every output family with representative parts, characteristic curves, strengths, and traps: from the humble phototransistor to gate-driver couplers that swing amps, and analog linear devices that pass a faithful copy of a waveform across the barrier.

⏳ Coming Soon — content in development

Learning Objectives

After completing this module, you will be able to:

Distinguish all major output-stage families and their symbols
Match each family to its speed/gain/drive envelope
Read the key spec differences between representative parts
Choose between TRIAC and SCR output for AC control
Explain how linear (analog) optocouplers achieve linearity

Planned Topics

Phototransistor
Photodarlington
Photodiode
High-speed logic output
Analog linear (IL300/HCNR201)
MOSFET output / solid-state relay
TRIAC output
SCR output
Gate-driver optocouplers

Reserved Sections

This module will follow the same interactive format as Module 1:

Interactive animations

Animated diagrams and simulations for this module are in development.

Engineering calculators

Module-specific design calculators will appear here.

Design examples

Worked examples with full component values are planned for this section.

Knowledge check

Multiple-choice, true/false, and scenario exercises will be added.

Downloadable resources

PDF notes, reference tables, and checklists will be provided.

While you wait: Module 1 — Introduction to Optocouplers — is fully available, including animations, the CTR and isolation calculators, and a complete knowledge check. Start there →