27 Thyristors | Power Electronics

The video tutorial covers silicon-controlled rectifiers (SCR) and thyristors, explaining their structure, operation, and characteristics. It discusses the IV curve, latching and holding currents, and methods to switch off thyristors, including the use of gate turn-off thyristors (GTO). The tutorial also explores applications of thyristors in controlling energy delivery to loads, such as in resistive loads, and introduces concepts like delay and conduction angles.

What are SCRs and how do they function in controlling current?

Explain the significance of the gate terminal in a thyristor.

Describe the IV curve of a thyristor and its implications for current flow.

What is the latching current and why is it important for thyristors?

How does the holding current affect the operation of a thyristor?

What happens to a thyristor when the current falls below the holding current?

Explain how AC voltage affects the operation of a thyristor.

What are the methods to turn off a thyristor?

Discuss the advantages of using GTOs over traditional SCRs.

How can thyristors be used to control power delivered to a load?