Reed Switches Explained

Learn how reed switches use magnetic fields to detect position and control electrical circuits in sensing and automation applications.

reed switches
magnetic sensor
online
video
course
training
e-learning
engineering

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Course Duration

10 Minutes
Course Level

Beginner to Intermediate
Language

English
Subtittle Language

English
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reed switches
magnetic sensor
online
video
course
training
e-learning
engineering

Description

This course explains the construction, operation, and applications of reed switches, one of the most reliable and widely used magnetic sensing devices in engineering. You'll learn how reed switches use magnetic fields to change the state of an electrical circuit without requiring direct mechanical contact, making them ideal for sensing and control applications.

Through detailed animations and clear explanations, the course explores the internal construction of reed switches, including the hermetically sealed glass capsule, ferromagnetic reeds, and electrical contacts. You'll discover how normally open and normally closed reed switches operate, the role of magnetic attraction and bias magnets, and how magnetic field strength affects switch actuation.

By the end of this course, you'll have a solid understanding of reed switch operating principles, common applications, reed relays, and the advantages of magnetic switching technology in industrial, automotive, and automation systems.

What you will learn in this course

Understand the operating principle of reed switches and magnetic actuation
Identify the main components including reeds, glass capsule, and electrical contacts
Recognize common engineering applications including bicycle speed sensors, door alarm systems, and industrial automation
Explain the differences between normally open and normally closed reed switches
Understand the advantages of reed switches