How Relays Work

The video tutorial explains the function and types of relays, including electromechanical and solid-state relays. It covers the components of relay circuits, such as the primary and secondary sides, and discusses normally open and closed relays. The tutorial also explores solid-state relays, their operation using semiconductors, and various applications of relays in controlling devices like fans and pumps. Advanced relay types, such as latching and double pole relays, are introduced, along with the concept of back EMF and the use of diodes for circuit protection.

Describe the function of the armature in a relay.

How can relays be used in a cooling fan system?

What are the advantages of using a double pole double throw relay?

Explain how a diode can be used to suppress back EMF.