Varistor - Wikipedia
网页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 ] . It has a nonlinear, non- ohmic current–voltage characteristic that is similar to that of a diode.
Varistor | Resistor Types | Resistor Guide - EE Power
网页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. Packages. Here are some examples of different varistor packages. The block packages are used for higher power ratings.
Varistor – Symbol, Working, Types & Applications - CircuitsToday
网页2017年9月18日 · This article will guide you through the world of a resistor that is dependent on voltage, known as the Varistors. What is a Varistor? A Varistor is a varying resistor whose resistance depends on the applied voltage. The name has been coined by linguistic blend of words; “varying” and “resistor”.
Varistors - Definition, Construction, Operation and Types
网页2024年5月29日 · Varistors are nonlinear electronic component designed to protect electrical circuits from excessive voltage surges or transients. It is a resistor whose electrical resistance varies significantly with changes in voltage.
The Basics of Varistors: how they work, their role, applications, …
网页2023年7月25日 · A varistor is a resistive device with non-linear voltammetric characteristics, mainly used for voltage clamping when a circuit is subjected to overvoltage, absorbing excess current to protect sensitive devices. The English name is "Voltage Dependent Resistor" abbreviated as "VDR" or "Varistor".
Varistor and the Metal Oxide Varistor Tutorial
网页Varistors are a type of resistor with a non-linear, non-ohmic current voltage characteristic and are a reliable and economical means of providing protection against over voltage transients and surges.
How varistors work in circuits | Description, Example & Application
网页2023年5月17日 · Learn how varistors work in electronic circuits, protecting devices from overvoltage or surges. Discover their structure, working principle, and applications.
Varistor Symbol and Applications | Metal Oxide Varistor
网页2024年3月22日 · A Varistor, or Voltage Dependent Resistor (VDR), is a type of resistor whose resistance changes with the voltage applied across it. It’s used to protect circuits against high voltage spikes. When the voltage is low, a varistor has high resistance, which means it won’t affect the circuit much.
网页Varistors are voltage dependent, nonlinear devices which have an electrical behavior similar to back-to-back zener diodes. The symmetrical, sharp breakdown characteristics shown in Figure 1 enable the varistor to provide …
Varistors Selection Guide: Types, Features, Applications
网页Varistors are nonlinear two-electrode semiconductor voltage-dependant resistors. The current in a varistor is proportional to applied voltage raised to a power. These devices are normally made of zinc oxide.