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  • Effects of Harmonic Currents on Semiconductor Fuse Ratings
    to be made to allow for ambient temperature, size of connecting cables and any air cooling. Standard type tests are done at 50 or 60Hz, but in modern power electronic applications the frequency may be much higher. It is not widely recognized that this may require de-rating of the fuses. A recent
  • U.S. Battery and Fuel Cell Patents :: ABT Online :: March 2009 :: Advanced Battery Technology ::
    Hori, Yoichiro Tsuji, Akihiko Yoshida, Takeshi Yonamine, and Makoto Uchida, Panasonic Corp. (JP) and Asahi Glass Co., Ltd. (JP). U.S. 7,473,487 (20090106), Temperature fuse, and battery using the same, Kenji Senda, Atsushi Kono, and Tatsuya Wada, Panasonic Corp. (JP). U.S. 7,473,488 (20090106), Battery
  • Powder Metal Molding
    Powder metal molding uses heat and pressure to form precision parts and shapes. The process begins by filling a die with powder and then compacting it at room temperature to form an engineered shape. Next, this compacted shape is ejected from the press and fed through a high-temperature furnace
  • Ferro Techniek's E-FAST® Sensor Technology
    Why use E-FAST®? Because our elements are high powered, fast and extremely responsive, any lack of dissipation of the heat due to abnormal use, dirt or scaling should be detected immediately. Bimetal switches, thermal fuses, NTC's and other present-day temperature protective devices are limited
  • Full Overheating Protection
    by an overheated part of a heating track. According to Gerd Kloppers, Ferro's development engineering manager, temperature protective devices such as bimetal switches, thermal fuses and negative temperature coefficient thermistors (NTCs) are limited in their performance by providing only local
  • Industrial Finishing: Coatings Manufacturing & Application
    . The thick-gauge large parts are cured in as little as 14 min. The initial eight-zone electric infrared section quickly ramps up the temperature of surfaces receiving the line-of-sight radiant heat. The three-zone gas convection section then raises the temperature of surfaces hidden from the radiant heat.
  • That's a Wrap
    the National Compact Stellarator Experiment (NCSX) goes live in 2009. The NCSX produces hot-ionized gases or plasmas confined by a magnetic field. The field is generated by 18 coils made by winding copper cables onto a stainless-steel form. When the gases reach the right temperature and density, two nuclei
  • Polymers protect printed paths
    chains and carbon black align to provide a low conductive path, but under a fault condition, the PPTC heats and rearranges the structure to reduce the number of paths. At a critical temperature, the PPTC switches to a high resistance state that limits current flow to a safe value. When the fault current

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