The most common modern type of varistor is the metal-oxide varistor (MOV). This type contains a ceramic mass of zinc oxide (ZnO) 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.
Traditional radial through-hole MOV (Metal Oxide Varistor) devices are available in diameters of 5mm, 7mm, 10mm, 14mm, 20mm and 25mm. They are fit for providing voltage surge protection for a wide variety of applications and include the C-III, iTMOV, LA, TMOV, RA, UltraMOV, UltraMOV25S, and ZA series. Bare disc varistors are industrial high ...
Feb 28, 2010 · The Metal Oxide Varistor or MOV is a voltage dependent, nonlinear device that provides excellent transient voltage suppression. The Metal Oxide Varistor is designed to protect various types of electronic devices and semiconductor elements from switching and induced lightning surges.
Dec 12, 2018 · A Metal Oxide Varistor ( MOV) is a protection component used in power supply circuits that is powered directly from AC mains. It is used to protect the circuit from high voltage spikes by varying its resistance. Pin Description Metal Oxide Varistors are similar to resistors and has only two leads.
Metal Oxide Varistor (MOV) technology is the most prevalent technology utilized in electrical transient protection products today. Many industry manufacturers, including Current Technology, integrate various sizes of radial or strap-type MOVs into their products: 20mm, 32mm and 40mm diameter MOVs are most commonly used.
Mar 11, 2019 · About this book. Completely up-to-date, this is the first comprehensive monograph on metal oxide varistors with a focus on microstructure, conduction mechanisms, device failures, ageing, additive impacts and future varistor systems. As such, it covers the fundamentals and applications of metal oxide varistors, including their macro ...
Metal oxide varistors (MOV) are semiconductors that protect electronic components and systems from transient voltages. Construction and Operation . These clamping devices contain a matrix of zinc oxide grains sandwiched between two metal plates which serve as electrodes.