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Submitted by: DAVID SMITH

Numerical control (NC) is the mechanization of machine tools that are functioned by accurately programmed commands encoded on a storage mean, as against to run manually via hand wheels or levers, or mechanically automated via cams alone. Most NCs today are computer numerical control (CNC), in which computers play an integral part of the control.

Fuji Electric delivers high-performance power semiconductors for energy, automotive, information technology, and industrial applications. IGBTs (Insulated Gate Bipolar Transistor) made my Fuji is used widely in CNC plasma cutters and welding machines.

Plasma cutting involves cutting a material using a plasma torch. It is commonly used to cut steel and other metals, but can be used on a variety of materials. In this process, gas (such as compressed air) is blown at high speed out of a nozzle; at the same time an electrical arc is formed through that gas from the nozzle to the surface being cut, turning some of that gas to plasma. The plasma is enough heated to melt the material being cut and moves pretty fast to blow molten metal away from the cut.

Arc and tube welding machines are mostly used in industrial setting for building and repair of the infrastructure. Welding power supplies are required to create an electric arc between an electrode and the base material to melt the metals at the welding point. The arc can be created by either DC or AC current with consumable or non-consumable electrodes. The welding region is sometimes protected by some type of inert or semi-inert gas.

Arc welding is popular due to low capital and running costs. For arc welding, the voltage is directly related to the length of the arc, and the current is related to the amount of heat input with typical currents of 50 to 500 amps depending on the size of weld. For arc welding with low voltages and large currents, a soft switching PWM DC-DC power converter with Fuji IGBT switches in the primary side of a high frequency transformer is considered to be the most suitable topology for the welding power supply110, 111. Power losses in the Fuji IGBTs are reduced by using soft switching resulting in a volume reduction of 59% and weight reduction of 47% compared with the hard-switching approach. Dynamic welding performance is improved due to operation at 40-kHz when compared with 13-kHz with hard-switching.

Http://www.USComponent.com had been selling IGBT power transistor modules since 2001. Thyssen Krupp, OTIS, IXYS, SONY DADC, General Motors, Hongkong Electric Holdings Limited, Singapore Mass Rapid Transit Trains LTD, Verkehrsbetriebe Zurich, Czech Airlines, Molex, Cisco, Omron, Good Year Tires, Thai Airasia, Boeing, Xilinx, LEAR SIEGLER, and General Electric.

Http://www.USComponent.com has a Quality Control Team like no other. This means that we know how to work hard in order to ensure to make sure that the quality of all of the parts were selling is high. Because we only sell new and original electronic parts, we provide our customers with a 30-day warranty. And because we have connections with IGBT power transistor modules manufacturers, OEMs and distributors, were able to pass any savings on to our customers, giving them a lower price while still providing them with the quality products they deserve. Our inventory is carefully managed and held to the highest standards, and stored in a controlled environment warehousing facility.

About the Author: David Smith, Senior Vice President of

USComponent.com

, an IGBT power transistor module distributor since 2001.

Source:

isnare.com

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