Varistor - Wikipedia
A varistor (a.k.a. voltage-dependent resistor (VDR)) is a surge protecting electronic component with an electrical resistance that varies with the applied voltage. [2]
Varistor: Definition, Function, Working and Testing - Utmel
Aug 21, 2020 · Ⅰ What is a varistor? A varistor is a device with a non-linear volt-ampere characteristic. It is mainly used to clamp the voltage when the circuit is subjected to …
Varistor Explained: Symbol, Types, and Testing and How Does ...
Aug 15, 2025 · A varistor is a device with a nonlinear voltage-current characteristic. It is primarily used to clamp voltage when a circuit is subjected to overvoltage, absorb excess current, and …
What are Varistors ? - GeeksforGeeks
Jul 23, 2025 · A Varistor is an electronic component designed to protect electrical circuits from excessive voltage surges or transients. It is a nonlinear resistor whose electrical resistance …
Varistor | Resistor Types | Resistor Guide - EE Power
Varistors are nonlinear two-element semiconductors that drop in resistance as voltage increases. Voltage dependent resistors are often used as surge suppressors for sensitive circuits. Here …
Varistors Explained: How They Work, Types, Uses, and ...
What is a Varistor? A varistor is an electrical component that protects circuits from sudden voltage surges. The word comes from “voltage-dependent resistor,” which describes how it works: its …
Varistor Explained: How It Works and Where to Use It
Nov 27, 2025 · Varistors are composed of semiconductor elements that provide overvoltage protection in a circuit. Their functionality is similar to a Zener diode, allowing voltages below …