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 identification.
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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.
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.
Metal oxide varistor grains of conducting zno average size d are separated by intergranular boundaries.
How to choose the right metal oxide varistor mov 0.
Help with identify varistor.
The radial leaded disc type is the most common version.
If lightning strikes a nearby power line the high voltage causes the mov to become a shunt preventing the.
How to test a mov metal oxide varistor surge protector.
Testing mov with a dmm all about circuits.
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.
Construction square varistor element leaded coating.
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Need some help identify a varistor.
Metal oxide varistors movs are available in a variety of form factors and sizes for a broad range of applications.
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When a high current passes through a mov its resistance value decreases and acts as a short.