17. MOV Basics

Question.8

In the shown SMPS PCB, the highlighted blue component in the red circle is a MOV (Metal Oxide Varistor) connected across the AC input section.
What is the purpose of this MOV in the circuit?

Need Help? Refer to the Quick Guide below

Select Answer

Filters high-frequency EMI noise
Limits inrush current at power-on
Clamps voltage surges to protect the circuit
Regulates output voltage