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  • Low-Field Magnetic Sensing with GMR Sensors
    Industry continues to reap the benefits of. solid state magnetic field sensing. Every day new. applications are found for solid state magnetic field. sensors due to their small size, low power. And. relatively low cost. The new frontier for these solid. state sensors is very low magnetic fields
  • Ten Easy Things to Do with Magnetic Sensors
    The measurement of magnetic fields for their own sake is a relatively uncommon goal outside the laboratory. It is more typical (in industrial, consumer, and automotive applications, for example) to see a magnetic field used as an indicator of some other phenomenon such as position or speed. Over
  • Coating Thickness Measurement: The Fundamentals
    the surface and the base substrate is measured. Inside the measurement probe is a coil that generates a changing magnetic field. When the probe is placed on the substrate, the magnetic flux density of this field is altered.
  • A Comparison of the Measured Magnetic Field Strength Using Ampere-Turns (AT) and milliTesla (mT) (.pdf)
    With the advent of the Reed Switch, developed by Bell Labs in the 1940s, it was convenient to measure its operate characteristics using the units of ampere turns. Since the Reed Switch is cylindrical it is easy to make the measurement of its closure, release and contact resistance using a coil
  • Magnetostriction in Automotive Position Measurement
    Magnetostriction is a property of ferromagnetic materials such as iron, nickel, and cobalt. When placed in a magnetic field, these materials change size and/or shape (Figure 2). This physical response of a ferromagnetic material is due to the pres-ence of magnetic moments, and can be understood
  • Setting Trends in Nanopositioning Technology:
    Thanks to this study, magnetic linear drives now allow for motion in 6 axes with positioning and guiding accuracy,never before achieved, in the range of a few nanometers. This is based on a high-resolution measurement system with controller, capable of detecting and compensating for deviations from
  • Anisotropic Magnetoresistive Sensors: Theory and Applications
    configuration, four of these resistors are connected in a Wheatstone bridge to permit measurement of the magnitude of the magnetic field along the direction of the axis. The bandwidth is usually in the 1­5 MHz range. The reaction of the magnetoresistive effect is very fast and not limited by coils
  • Sensor Sense: Hall-effect current sensors
    feeds an electronic circuit that checks it for control or overload sensing. A new generation of small Hall-effect-based current sensors simplify the task. Hall-effect devices measure current via the intensity of the magnetic field generated by the current flow. Of course, higher currents produce

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