astatic coils

Noun
  1. An arrangement of coils used in sensitive electrical instruments;
    The coils are arranged to give zero resultant external magnetic field when a current passes through them and to have zero electromotive force induced in them by an external magnetic field (synset 102753325)
    is a type of: coil - reactor consisting of a spiral of insulated wire that introduces inductance into a circuit
    is a part of: astatic galvanometer - has a moving magnet and astatic coils arranged to cancel the effect of the Earth's magnetic field

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