Thursday, 6 September 2012

Induction Type Instruments, Working Principle of Induction Type Instruments


The principle of operation of induction instrument is similar to that of induction motor. A rotating magnetic field is produced by the coils of the instrument. A aluminum disc is suspended near to the coil in which eddy currents are induced by rotating flux. The rotating flux interacts with the induced eddy current and produces torque which causes the aluminum disc to rotate.

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