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  • Design Considerations to Increase Power Density in Welding Machines Converters Using TRENCHSTOP(TM)5 IGBT
    The demand for portable low cost welding machines, especially in developing countries, is increasing. In the Manual Metal Arc and Tungsten Inergt Gas types, in power range from 1,5kW up to 5kW, discrete IGBTs and MOSFETs are broadly used. Mostly, these machines use hard switching current mode PWM
  • Improvements in Low Power, End window, Transmission-Target X-ray Tubes
    consistent performance from tube to tube. 2) Changes in the anode geometry have resulted in reduced spectral contamination from metal parts in the anode. 3) The electron beam position on the anode is primarily influenced by the filament placement relative to the cathode optic. Using finite-element
  • Hall Sensor - Test Geartooth Sensing
    e best ferrous targets are made of cold-rolled low carbon steel. Sintered-metal targets are also usable, although care must be taken to ensure uniform material composition and density.
  • Outlining Mid-Mountain Tray Pads for Aluminum Protection
    Aluminum is a highly formable metal with remarkably low density. It has been used in manufacturing and engineering markets worldwide since the mid-20th Century, and it sits alongside steel as one of the most widely-consumed materials on earth. However, the malleability of aluminum intermediate
  • Tin Vs. Bare
    (or `loose') electrons, called conduction electrons which are gathered in an "electron sea" around the metallic nuclei within the metal. Commonly understood as the sharing of "free" electrons among a `lattice' of positively-charged ions, the conduction electrons divide their density equally over all
  • Dielectric Materials for Use in Radomes
    Mfg. Co. presents an overview of dielectric materials, as well as a comparison of polyurethane foam with other commonly used dielectrics. In addition, dielectric properties of three series of rigid polyurethane foam at low, medium and high densities are examined in frequencies ranging from 1 - 10 GHz
  • Designing Atmospheric-Pressure Plasma Sources for Surface Engineering of Nanomaterials
    composition, it is expected that their dielectrophoretic (DEP). properties are also unique. cDEP is a technique developed to improve upon traditional. and insulator-based DEP devices by replacing embedded metal electrodes with fluid. electrode channels positioned alongside desired trapping locations

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