Metal Oxide Varistor Circuit Diagram

The circuit we will build is shown below.

Metal oxide varistor circuit diagram.

The most common modern type of varistor is the metal oxide varistor mov. The component starts conducting as soon as the voltage across it reaches the threshold voltage. A varistor voltage dependent resistor vdr is a component which has a voltage current characteristics that is very much similar to that of a diode. This mov circuit will clamp up to 300vac if a power surge allowing transients into the circuit were to be that high.

Working of metal oxide varistor mov working of metal oxide varistor mov the working of a mov is shown in the figure above. First let us consider the component to have an open circuit as shown in figure 1 a. The boundary between each grain and a neighbor forms a diode junction which allows. The resistance of the mov is very high.

This type contains a ceramic mass of zinc oxide grains in a matrix of other metal oxides such as small amounts of bismuth cobalt manganese oxides sandwiched between two metal plates which constitute the electrodes of the device. The metal oxide varistor is designed to protect various types of electronic devices and semiconductor elements from switching and induced lightning surges. The metal oxide varistor or mov is a voltage dependent nonlinear device that provides excellent transient voltage suppression. The metal oxide varistor or mov is a voltage dependent nonlinear device that provides excellent transient voltage suppression.

This component is used to protect electrical devices from high transient voltages. 300vac metal oxide varistor.