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DC motors are most commonly used in variable speed and torque applications. They include brushless and gear motors, as well as servomotors.
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  • components. DC generators are either separately excited or self-excited. Generator Exciters AC and DC - Engineers Edge. Applications and Design. Engineering Analysis. Engineering Basics. Engineering Calculators. Engineering Materials. Generator Exciters AC and DC. Industrial Electric Motors and Generators
  • Application Note: Liquid Scintillation (.pdf)
    . Solvent molecules in the scintillation cocktail become excited by the radiation which results in the excitation of a fluorescent molecule. When the fluor molecule returns to its ground state a blue flash of light is emitted. The light is captured by a detector and recorded as a radioactive emission
  • "No-Solvent" Oil-in-Water Analysis - A Robust Alternative to Conventional Solvent Extraction Methods (.pdf)
    varying from 0.2 to 3.2% of range (0-100 ppm range). The average error over all the oils was 1.5% of range. Repeatability, based on the measurement of ten. separately prepared control samples containing 30 ppm of North Sea crude, was 2.9% of range. "No-Solvent" Oil-in-Water Analysis ­ A Robust Alternative
  • Astronomers Measure Mass of a Single Star First Since the Sun
    . But the light from one of the events discovered in 1993, dubbed MACHO-LMC-5, didn't just brighten. Changes in its color suggested that the background star and the lensing star were of similar brightness. This raised the possibility that the two stars could be observed separately, if astronomers waited
  • Phosphor Thermometry During Galvannealing
    technique uses the decay of radiated light by an excited phosphor. This effect can be observed on the night-glow faces of older analog watches. A quicker phosphor coating lines the inside of a television tube. A ceramic phosphor is sprayed on a hot rolling steel sheet during galvannealing
  • Introduction to Impulse Hammers
    driving the test object may be used to define input force amplitude and a signal generator controls frequency. When the test object is too large to be excited in this fashion, or when it is physically impossible to do so, there is another method to consider. An alternative method available to excite
  • Vendors waste no time responding to need for post-CMP treatment
    governmental jurisdiction. Allowable levels of total suspended solids are 8 ppm, Browne says. "In order for me to meet that requirement I have to treat my CMP slurry separately in order to remove the suspended solids from the waste stream." The solution? Pall, the giant filtration and separations company

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