Metal Oxide Varistor Identification

If lightning strikes a nearby power line the high voltage causes the mov to become a shunt preventing the.

Metal oxide varistor identification.

Normally the mov has very high electrical resistance. Are external components required for hlk pm01. Metal oxide varistors movs are available in a variety of form factors and sizes for a broad range of applications. A metal oxide varistor or mov is the blue or orange colored circular component that you can commonly spot on the ac input side of any power supply circuit the metal oxide varistor can be considered as another type of variable resistor that can vary its resistance based on the applied voltage across it.

When a high current passes through a mov its resistance value decreases and acts as a short. Help with identify varistor. Epoxy molding flame retardant to ul 94 v 0 terminals. Designing a varistor for a given nominal varistor voltage v n is basically a matter of selecting the device thickness such that the appropriate number of grains n are in series between electrodes.

Need some help identify a varistor. Testing mov with a dmm all about circuits. Help to choose fuse varistor and or tvs diode. Tire markings or how to read what s written on the side of the tire there is a lot of useful information on the side of your tires if you know how to interpret the markings you find there tire markings now anyone can read them 16 02 2011в в varistor degradation is defined by.

The radial leaded disc type is the most common version. Tinned copper wire metal compound wire. Siov metal oxide varistors b72230m thermofuse varistors mt30 series ppd var pd 2020 01 06 please read cautions and warnings and page 2 of 11 important notes at the end of this document. Construction square varistor element leaded coating.

A metal oxide varistor mov is an electronic device that protects an appliance s power supply from voltage spikes and surges in the ac power line. Metal oxide varistor grains of conducting zno average size d are separated by intergranular boundaries.