Metal-Oxide Varistors. MOVs are bipolar, ceramic semiconductor devices designed to sense and limit transient voltage surges. The term varistor is a generic name for voltage-variable resistor. The resistance of an MOV is nonlinear and decreases as voltage magnitude increases.
Similarly, it is asked, what is MOV protection?
The Metal Oxide Varistor or MOV is a voltage dependent, nonlinear device that provides excellent transient voltage suppression. The Metal Oxide Varistor is designed to protect various types of electronic devices and semiconductor elements from switching and induced lightning surges.
How does surge protection work?
A surge protector (or surge suppressor or surge diverter) is an appliance or device designed to protect electrical devices from voltage spikes. A surge protector attempts to limit the voltage supplied to an electric device by either blocking or shorting to ground any unwanted voltages above a safe threshold.
What is an MOV in a circuit?
Varistors, also called metal-oxide varistors (MOVs), are used to protect sensitive circuits from a variety of overvoltage conditions. Essentially, these voltage-dependent, nonlinear devices have electrical characteristics similar to back-to- back Zener diodes.