AC Measurement and Instrumentation Handbook

The “AC Measurement and Instrumentation Handbook” is an authoritative compendium delving into the realm of alternating current (AC) measurement techniques and instrumentation. This comprehensive guide navigates through principles, methodologies, and advanced tools used for precise AC measurements, making it an indispensable resource for engineers, researchers, and students in the field.

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AC electromechanical meter movements come in two basic arrangements: those based on DC movement designs, and those engineered specifically for AC use. Permanent-magnet moving coil (PMMC) meter movements will not work correctly if directly connected to alternating cur- rent, because the direction of needle movement will change with each half-cycle of the AC. Permanent-magnet meter movements, like permanent-magnet motors, are de- vices whose motion depends on the polarity of the applied voltage (or, you can think of it in terms of the direction of the current).

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