Varistor

Une varistance à oxyde métallique de 385V. Un parafoudre haute tension. Also known as a voltage-dependent resistor (VDR), it has a nonlinear, non-ohmic current–voltage characteristic that is similar to that of a diode. In contrast to a diode however, it has the same characteristic for both.

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Electronics Tutorial about the Varistor and Metal Oxide Varistor or MOV which is used in power electronics circuits for protection against transients. The resistance of a varistor is variable and depends on the voltage applied. A varistor is a voltage dependent resistor (VDR). The word is composed of parts of the words “variable resistor”. Their resistance decreases when the voltage increases.

In case of excessive voltage increases, their resistance drops. To find the varistor that meets your needs, start with Littelfuse. Browse a selection of varistors , including the metal oxide varistor , today.

Littelfuse varistors are available in a variety of forms to serve a wide range of applications. Options include ultra small surface mount multi-layer suppressor ( MLV) devices for small electronics applications, and traditional mid- range metal- oxide (MOV) radial and axial leaded devices for protection of small machinery, power. Many series and parallel connections determine the voltage rating and the current capability of the varistor.

Manufacturing process flow. How a common surge strip works explained by GE Global Research Engineer Bill Morris. Well, consider the following.

You probably have a prototype board on your desk that contains the simple circuit shown below. It is a basic circuit: a power supply and load. There is no protection for the loa or the supply, from voltage transients.

With no circuit protection device, what could. Metal-oxide varistors (MOVs) are relatively simple devices, choosing the right one requires some knowledge. When a high voltage surge is applied to a circuit, the outcome is usually catastrophic to the circuit.

Varistors are used to protect a circuit from high voltage surges. A capacitor may be installed across the signal lines. However, this capacitor cannot suppress voltage surges. Therefore, when circuit protection from voltage .

The most common type of varistor uses a metal oxide and hence they are often known as metal oxide varistors , MOV. As a result of their voltage dependent nature, these devices are also known as voltage dependent resistors. Varistor is a type of variable resistor which is a passive nonlinear two terminal solid state semiconductor device. Read more about metal oxide varistor. Product information and news of Chip Varistor , Panasonic.

With industry-leading research and design tools, Arrow makes finding the right part easy. A metal oxide varistor , or MOV, is the most common type of varistor and contains a mass of zinc oxide grains that are . De très nombreux exemples de phrases traduites contenant metal oxide varistor – Dictionnaire français-anglais et moteur de recherche de traductions françaises.