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Posts Tagged ‘IGBT’

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IGBT Plasma Cutters

Plasma cutting in simple is a process through which steel and metal of different sizes and thickness is cut through the plasma torch. During this process, the inert gas or compress air used in some machines is blown at very high speed from the nozzle and at the same time electrical arc is made from the gas of nozzle to the surface needed to cut which turns some of the as to plasma. This plasma is suitably hot to easily melt the metal that is cut and it also moves fast to blow the metal far from the present cut. Additionally Longevity plasma arc cutters and several other applications also use IGBT plasma cutting technology which enables for Longevity to provide more commercial plasma cutting equipment.

The starting method

The Longevity IGBT plasma cutters generally use a different method to start the pilot arc and are built for professional metal working environments. Some IGBT plasma metal cutters might often use high frequency starting technology, high voltage circuit just for the starting process and others use Pilot Arc starting technology, where the torch enables a constant arc without touching the work piece. A Longevity IGBT plasma cutter featuring high frequency starting technology is more affordable, but also possesses a technological inferiority because of spark gap maintenance, difficulty of repair and you might also find a huge amount of radio frequency emission. Those plasma cutters which work near sensitive electronics like computers or CNC hardware would use the contact start method. The electrode and nozzle would be in contact. Here the nozzle would be the positive and electrode is the negative. So, when the plasma cutter gas starts to flow nozzle would be flown forward. However the other method which is less common is the capacity discharge in the main circuit through silicon controlled rectifier. In most cases Longevity uses Pilot Arc starting technology with IGBT Plasma Cutters because of the popularity and importance of a quick starting arc.

Inverter IGBT plasma cutters

The analog plasma cutter would generally need above 2 kilowatts and they also use heavy mains frequency transformer. The inverter plasma cutters generally rectify the main supply to the DC supply which is give as a high frequency transistor to nearly 200KHz. Some higher switching frequencies would give even greater efficiencies in transformer which allows its weight and size to be reduced.

The transistors that were commonly uses before were MOSFETs but today IGBT plasma cutters are highly being used in commercial or industrial applications where the demand of the size of the amperage is high. When placed parallel with MOSFETs and one transistor activates too early then, it can lead to cascading problem of one of the quarters of inverter. However with the newer invention and by using IGBTs, the Longevity Testing Team was able to avoid this problem. The IGBT plasma cutter can be commonly found in several high current plasma metal cutting machines that put out more than 60amps of power.

The Longevity ArcMate M200 IGBT Mig Welder is the first device to include IGBT technology in the Longevity Welding Equipment lineup, which achieved great success for MIG Welders able to compete with the leading brands and it enabled a it opened the doors for other IGBT welders and plasma cutters. After carefully testing a number of IGBT products by the Longevity Testing Team and well received recognition from welding professionals, it lead to the launch of the IGBT plasma cutters and welders full line up. These units are of top notch quality, are easily portable and can compete with any major brand that is today available in the market regarding both the price and quality.

IGBT: insulated gate bipolar transistor

Known as IGBT or insulated gate bipolar transistors, it is a 3 terminal power semiconductor system known for its fast switching and high efficiency capabilities. The device is used for switching power in most of the modern appliances of today like stereo systems, air conditioners, speed refrigerators and electric cars with the help of switching amplifiers. The device has been designed for rapid on and off features thus, the amplifiers which use it come along complex waveforms, low pas filters and width pulse modulation. The device is used for combining low saturation and high current voltage capacity of bipolar transistor with simple gate drive characteristics of MOSFET. This is done through combining bipolar power transistors in form of a switch and an isolated gate FET for controlling input. The device is also used for various low to high power application like inductive heating, traction motors and switch mode power supply.

On the other hand huge insulated gate bipolar transistors typically comprise of parallel devices which come along high voltage handling capabilities. Such voltage capabilities normally range up to high amps. The device which was recently invented is very useful in a lot of electrical appliances and industries. The first generation systems of similar kind were found in the market since 1980s but were very slow to switch on and off. Most often such devices were prone to failures through modes such as secondary breakdown and latchup. Consequently the second generation systems were much more improved and came along better voltage handling capabilities. Currently, the third generation systems are the best and showcase better tolerance towards overload and speed competing MOSFETs.

This is the reason why the third generation systems are also used to generate huge power pulses in fields like plasma and particle physics. These are some of the areas where in the third generation systems are fast replacing older IGBT’s like triggered spark gaps and thyrathrons. The Longevity AcrMate M200 200AMP MIG IGBT is one of the latest MIG Welders out there in the market, which features the IGBT technology with spool gun capability and an internal spool. The welder is available at a price tag of $899.99 with free whipping. Low pricing, durability, and high amp output are some of the other reasons for the popularity of IGBT plasma cutters and welders. Insulated gate bipolar transistors are also used for controlling high power which enables Longevity to finally be re cognized in the welding industry for providing high quality industrial and commercial welding equipment.

Models:

Longevity offers various models of welding equipment which features IGBT technology including plasma cutters and welders. Longevity has been involved in manufacturing IGBT machines for a long time in order to provide the welder with a more commercial welding apparatus. Such models are used for combining various components such as BJTs and FETs together. Insulated gate bipolar transistors (IGBTs) are considered to be more efficient in comparison to MOSFET technology when it comes to more reliable commercial welding equipment. IGBT models are known to showcase good results while put in tests in commercial and industrial welding environments. Whether you are looking for a commercial welder or a hobby welder, Longevity offers both IGBT and MOSFET technology welding and cutting equipment to match your needs.

In order to help you choose IGBT or MOSFET Welders/Cutters, you will come to a conclusion more accurately after taking into consideration the pros and cons of both technologies, along with the purpose of their use, commercial/industrial/professional or enthusiasts. To make a decision you will need to understand what type of application you are going to use the welders for whether it is commercial welding or garage or small shop welding take your pick of equipment is the best alternative for those who wish to make an informed choice. Remember, the IGBT welders and cutters are bit a pricier so please take that into account as well.

Longevity MOSFET Welders/Plasma Cutters use MOSFET technology, which is most commonly used when the amplification or switching of electronic signals is the need of the hour. Longevity has designed welding equipment featuring MOFET technology to keep the cost low for hobbyist and enthusiasts. Longevity uses MOSFET technology in plasma cutters and welders that require less strenuous use or on less powerful, smaller amperage equipment. This technology, when applied in a welder/cutter can ensure optimum utilization of available electrical power so that too much power is not allowed to flow through the circuit gateway of the device. This technology of MOSFET Welders and plasma cutters is quite beneficial in ensuring that the gateways of coupling circuits do not burn out due to overexposure to high voltage current flow. This metal oxide semi conductor field effect transistor technology is a popular choice among users of welding equipment if they are looking for a compact yet highly efficient machine to perform exceptional welding jobs. This genre of welders has been gaining in popularity from the time the MOSFET technology was invented in 1959 by two extremely dedicated research scientists of Bell Labs who have been extremely devoted to electronic research. Since the invention, Longevity MOSFET plasma cutters and welders are enable the welding population to use smaller and more affordable welding/cutting equipment for their jobs.

IGBT Welders are those welding machines which employ the Insulated Gate bipolar Transistors in their internal electronic circuits. The IGBT is a power semi conductor device with three terminals well known for its high efficiency and fast switching. It is being fitted in many modern electronic appliances, including cars, stereo systems and even refrigerators, apart from IGBT. This technology is very effective where there is a high requirement of switching amplification. The IGBT Welders have technology that is designed to rapidly switch the device on and off, and this allows the machine to synthesize complex wave forms with both, pulse with modulations and low pass filters. The IGBT can compile the gate drive feature of MOSFET with the low saturation and high current capabilities of the bipolar transistors of former fame. The IGBT technology is used in controlling large amounts of power. These welders are quite popular with the users who require high pulse ratings in comparatively low prices. Longevity IGBT Welders and Cutters are built for more commercial and heavy duty applications. The use of this technology allows Longevity to provide welding equipment that is designed for professional and industrial job requirements.

Whichever of the two, MOSFET vs IGBT Welders/Plasma Cutters that you may choose, Longevity has a variety of models in both technologies and all can be viewed at www.longevity-inc.com. With easy transportability and a greater amount of superiority in the welder features, Longevity welders and plasma cutters are truly world class. If you are deciding which is better and still having a hard time concluding, please note that both IGBT or MOSFET technologies are covered by Longevity’s unmatched 5-YEAR parts and labor warranty. Without a doubt, an inexpensive means to achieve the perfect balance between technology and excellent output, the welder models that are available at Longevity truly offer a better durability to the clients.