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  • A New Sensor ASIC for Changing Magnetic Fields
    fields that change unpredictably, it must be able to detect small changes in an external magnetic field while canceling out any magnetic noise present in the vehicle. Furthermore, the vehicle's own magnetic noise constantly changes in strength and direction as it comes near outside sources that are also
  • AN107 Practical Thermocouple Temperature Measurements
    and in his. honor, the unit of inductance was given the name "Henry". Practical Thermocouple Temperature Measurements. Preamble. Table 1. Standard Thermocouple Types. The theory of thermocouple behavior is discussed in. Dataforth's Application Note AN106, Reference 8. The. reader is encouraged to examine
  • Sensorless Field Oriented Control of PMSM Motors using dsPIC30F or dsPIC33F Digital Signal Controllers
    AN1078 Sensorless Field Oriented Control of PMSM Motors This application note focuses on the PMSM-based sen- Author: Jorge Zambada sorless FOC control of appliances because this control Microchip Technology Inc. technique offers the greatest cost benefit in appliance motor control. The sensorless
  • Development of Traction Motor for Fuel Cell Vehicle (.pdf)
    This motor adopted a salient pole type surface permanent magnet rotor, which enables it both to produce reluctance torque and to minimize the use of magnets. The inductance value is set at the limit value enabling output at the maximum rotor speed, which suppresses field-weakening current
  • Capacitor Engineering Bulletin: Polarization and Leakage Current Characterizations of High Voltage, Film Capacitors
    It is an unfortunate fact that "real" capacitors differ from ideal capacitors in many respects. Real capacitors include parasitic inductance and resistance, and vary in capacitance with temperature, frequency and voltage. This is especially true in high energy density capacitors, where dielectric
  • RFID Coil Design
    OF A BASIC THEORY FOR. Author: Youbok Lee. Microchip Technology Inc. ANTENNA COIL DESIGN. Current and Magnetic Fields. INTRODUCTION. Ampere's law states that current flowing on a conductor. produces a magnetic field around the conductor. In a Radio Frequency Identification (RFID) application,. Figure
  • Designing a Transponder Coil for the HCS410
    windings as well as the equivalent load placed across the coil are entered. This fixes the Initial Coil Specification. Once the initial coil is built, measurements are made on this coil to determine the coil quality factor. These measurements are used to calculate the Optimum Coil Specification
  • AN508 Protecting Signal Lines Against EMI
    , the fingers will show the direction of magnetic field lines. Imagine. Capacitive Coupling. the complicated magnetic fields which exist near heavy electric machinery or. Any piece of plant equipment or wiring can develop an electric charge, or where many cables are routed in a common tray. Lenzs Law

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