Metal Oxide Varistor Function

Mov s are the most used component to protect heavy devices from transient voltages.

Metal oxide varistor function.

When exposed to high transient voltage the mov clamps voltage to a safe level. Essentially these voltage dependent nonlinear devices have. The ceramic powders of the metal oxides are kept intact between two metal plates called the electrodes. It is used to protect the circuit from high voltage spikes by varying its resistance.

Surface mountable mov metal oxide varistor devices facilitate customs in smt assembly process and resolve the pcb space limitation issue. Varistors are used as control or compensation elements in circuits either to provide optimal operating conditions or to protect against excessive transient voltages. They are reflow and wave solderable and include the ch sm7 sm20 mle mhs ml and mln series. The metal oxide varistor is designed to protect various types of electronic devices and semiconductor elements from switching and induced lightning surges.

Varistors also called metal oxide varistors movs are used to protect sensitive circuits from a variety of overvoltage conditions. It is called so as the component is made from a mixture of zinc oxide and other metal oxides like cobalt manganese and so on and is kept intact between two electrodes which are basically metal plates. Since a metal oxide is used in its construction the ability to absorb short voltage transients and the energy handling capabilities are extremely high. Metal oxide varistors consist of approximately 90 zinc oxide as a ceramic base material plus other filler materials for the formation of junctions between the zinc oxide grains.

This type is commonly known as the metal oxide varistor mov. A metal oxide varistor mov is a protection component used in power supply circuits that is powered directly from ac mains. Metal oxide varistors are now the most common type of voltage clamping device and are available for use at a wide range of voltages and currents. Metal oxide varistors are the most commonly used components that are used as voltage clamping devices to protect small or heavy devices from transient voltage surges.

A mov consist of approximately 90 of zinc oxide and a small amount of other metal oxides.