What does the acronym MOV stand for in electrical terminology?

The acronym MOV stands for Metal Oxide Varistor, which is an important component in electrical systems. MOVs are used to protect sensitive electronics from voltage spikes and surges. They function by changing their resistance based on the voltage applied to them. Under normal operating conditions, they have a high resistance, but when a voltage surge occurs, the resistance decreases, allowing excess current to pass through and thus protecting the electronic components from damage.

This property makes MOVs particularly valuable in surge protectors, circuit boards, and power distribution systems where voltage transients can occur due to lightning strikes, switching events, or other disturbances. By understanding the role of MOVs in electrical circuits, one can appreciate their significance in safeguarding equipment and maintaining system stability.