A mov file is an mpeg4 multimedia container file format developed by apple. An lv ultramov varistor is smaller than a standard littelfuse varistor with the same surge capability. The basic varistor consists of a layer of oxide on a metal sheet, typically zinc. Typically, drivers are rated to handle surges in the range of 1 to 4 kv. You could also consider using vlc which is a free downlodable program. However, windows media player can open only early versions of the file. Mov files may contain video, audio, timecode, and more. It is called so as the component is made from a mixture of zinc oxide and other metal oxides like cobalt, manganese and so on and is kept intact between two electrodes which are basically metal plates.
A varistor is a varying resistor whose resistance depends on the applied voltage. This mov circuit will clamp up to 300vac if a power surge allowing transients into the circuit were to be that high. The mov20dxxxk series of 20 mm radial leaded varistor devices protects against overvoltage transients such as lightning, power contact and power induction. For example, an ordinary 10mm mov capable of 500a maximum surge current could be replaced by a new 5mm lv ultramov varistor with the same 500a surge rating. Energy typical capacitance part number acrms dc dc volts. This type contains a ceramic mass of zinc oxide grains, in a matrix of other metal. It is called so as the component is made from a mixture of zinc oxide and other metal oxides like cobalt, manganese and. They are also known by the name vdr voltage dependent resistor and have nonohmic characteristics. Withstanding surge current the maximum current within the varistor voltage change of 10% with the standard impulse current 820. Metal oxide varistors mov data sheet pulse electronics. In this video i test an mov varistor, which is a component used for protecting circuits from over voltage.
Varistor symbol and applications metal oxide varistor. The most common type of varistor is the metaloxide varistor mov. This reduces both pcb space requirements and component height. A metal oxide varistor mov is an individual electronic component that diverts extreme voltage to the ground or to neutral lines.
Mov is a format developed by apple and used for movie and other video data storage. Select mp4 as the the format you want to convert your mov file to. Pdf reliability evaluation of metal oxide varistors for. Convert mov to mp4 online and free this page also contains information on the mov and mp4 file extensions. S14k420 varistor 420vrms 14mm radial epcos inc datasheet pdf data sheet free from datasheet data sheet search for integrated circuits ic, semiconductors and other. S20k230 varistor 230vrms 20mm radial epcos inc datasheet pdf. The metal oxide varistor or mov for short, is a voltage dependant resistor in which the resistance material is a metallic oxide, primarily zinc oxide zno pressed into a ceramic like material. Just to be sure i am not in the wrong, a varistor is a voltage dependant resistor. Users should verify actual device performance in their specific applications. 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 tinned copper alloy terminals are suitable for snpb and leadfree wave and reflow solder. The metal oxide varistor or mov is a voltage dependent, nonlinear device that provides excellent transient voltage suppression. They are a type of nonlinear device that feature similar characteristics to zener. Buy bourns movdk online at newark element buy your mov 10dk from an authorized bourns distributor.
Allowable voltage varistor voltage withstanding surge current 8 20. Stacking many varistors in a series as one varistor can. They have the capability to absorb high transient energies and can suppress both positive and negative transients. Simple and inexpensive, the mov absorbs the energy in a surge, preventing it from damaging other devices in a circuit.
Metaloxide varistors movs radial lead varistors tmov. It is also a nonlinear device and provides very good transient voltage surge protection. Jan 28, 2018 in this video i test an mov varistor, which is a component used for protecting circuits from over voltage. Metal oxide varistors consist of approximately 90% zinc oxide as a ceramic base material plus other filler materials for the formation of junctions. Therefore, they come under non linear type of resistors.
They have the capability to absorb high transient energies and can suppress both positive. This type contains a ceramic mass of zinc oxide grains, in a matrix of other metal oxides, such as small amounts of. Select the right varistors for overvoltage circuit protection. A simple varistor circuit learning about electronics. Metal oxide varistor basics mov is the most commonly used type of varistor. Metaloxide varistors movs radial lead varistors ultramov tm 25s varistor series 100 0 0. In the event of receiving this voltage, the mov would clamp and shunt the excess power. They are used to protect vulnerable electronic circuits and components from overvoltage conditions that can cause damage. The metal oxide varistor is designed to protect various types of. Metaloxide varistors movs radial lead varistors tmov and. For example if there is a power surge, the varistor, normally having a very high.
Metal oxide varistor mov data sheet pulse electronics. Tmov varistor lead free and rohs compliant models itmov varistor lead free and rohs compliant models disc diameter maximum rating 85c specifications 25c continuous transient varistor voltage at 1ma test current maximum clamping voltage 820s typical capacitance f 1mhz ac volts dc volts energy 2ms peak surge current 820s. However, before movs were introduced, silicon carbide, sic, was the varistor of choice. Metal oxide varistor mov, basics, working, specifications. For this reason, varistors are also called metaloxide varistors mov. They are a type of nonlinear device that feature similar characteristics to zener diodes.
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 sandwiched between two metal plates the electrodes. Simple and inexpensive, the mov absorbs the energy in. Withstanding surge current the maximum current within the varistor voltage change of. The most common type of varistor on the market today is the metal oxide varistor, mov. Varistors vishay varistors provide a reliable and efficient way to protect against highvoltage transients and surges. A metal oxide varistor is also known as a surgesuppressor. The varistor, ranging from 7 to 14 mm in diameter, is usually located downstream of the fuse on the ac mains.
Shop mde semiconductor here for our wide range of varistors, thyristors, tvs diodes. I test it to see how well it can clamp high voltage. A simple equivalent circuit representing a metal oxide varistor as a. For example if there is a power surge, the varistor, normally having a very high resistance, responds to the voltage spike by absorbing its energy with a very low resistance. The maximum energy within the varistor voltage change of 10% when one impulse of 10. A surge in excess of the specified withstanding surge current may cause short circuits or package rupture with expulsion of material. In the event of receiving this voltage, the mov would clamp and shunt the excess power safely to ground, so that the excess current would not flow through the ac motor but through the varistor. The metal oxide varistors offer a choice of varistor voltages from 18 v to 1800 v and vrms voltages from 11 v to 1100 v. Varistors provide reliable and economical protection against high voltage.
Shop mde semiconductor here for our wide range of varistors. Nov 10, 2018 the most common type of varistor on the market today is the metal oxide varistor, mov. Mov to mp4 convert your mov to mp4 for free online. However, windows media player can open only early versions of the file extension. The metal oxide varistor is designed to protect various types of electronic devices and semiconductor elements from switching and induced lightning surges. The name has been coined by linguistic blend of words. Pdf metal oxide varistors movs are the essence of surge protection devices. Metal oxide varistor is a voltage dependent resistor. Online file converter from quicktime mov to pdf portable document format, file format developed by adobe systems. The ultramov metal oxide varistor series is designed for applications. Metal oxide varistors, more commonly known as movs are devices that provide excellent transient voltage suppression. The most common modern type of varistor is the metaloxide varistor mov.
A varistor is an electronic component that protects expensive devices from harmful power surges, much like a shock absorber. S20k230 varistor 230vrms 20mm radial epcos inc datasheet pdf data sheet free from datasheet data sheet search for integrated circuits ic, semiconductors and other. Metal oxide varistor mov 10mm disc high surge rohs u l symbol item dimensions symbol item dimensions cut out length 1. A surge in excess of the specified withstanding surge current may cause short circuits or package rupture with expulsion.
To overcome the limitations of semiconductor based varistors like silicon carbide varistors, the metal oxide varistors mov have been developed. Mov 14dxxxk series metal oxide varistor rohs directive 200295ec jan. Specifications are subject to change without notice. A metal oxide varistor, or mov, is an electronic component that protects equipment from voltage surges in a power line, such as from lightning strikes. The power so developed must be within the specifications shown on the. Energy typical capacitance part number acrms dc dc volts 1 time vc ip 2 ms 10 1,000 s at 1 khz volts volts min. Pdf comparative study of metal oxide varistors movs for.
Varistor characteristics, terms and consideration factors. Its electrical resistance decreases with the applied voltage. Mov14dxxxk series metal oxide varistor rohs directive 200295ec jan. Amperes volts amperes joules pf 11 14 16 20 100 36 1 0. Stacking many varistors in a series as one varistor can increase the clamp voltage of a mov. The mov 20dxxxk series of 20 mm radial leaded varistor devices protects against overvoltage transients such as lightning, power contact and power induction. S20k230 varistor 230vrms 20mm radial epcos inc datasheet pdf data sheet free from datasheet data sheet search for integrated circuits ic, semiconductors and other electronic components such as resistors, capacitors, transistors and diodes.
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