Electrical Engineering ⇒ Topic : Applications of Permanent-Magnet Moving Coil (PMMC) Instruments
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David
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Applications. Permanent-magnet moving coil instruments are acknowledged to be the best type for all d.c. measurements. They are very sensitive and maintain a high degree of accuracy over long periods. The chief applications of such instruments are (1) In the measurement of direct currents and voltages. (2) In d.c. galvanometers to detect small currents. (3) In ballistic galvanometers used mainly for measuring changes of magnetic flux linkages | |
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