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    tell's Avatar
    tell Posts: 4, Reputation: 1
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    #1

    Jun 22, 2008, 12:10 PM
    Commutators in d motors
    What is the purpose of the commutator in a dc motor? To convert ac to dc? To maintain undirectional current flow through the amateur, to provide a means of connection between upply and the armature, or to improve torque?
    rsain2004's Avatar
    rsain2004 Posts: 207, Reputation: 6
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    #2

    Jun 22, 2008, 12:40 PM
    The commutator and the brushes provide a connection between supply and the armature, The position of the brushes insures each coil of the armature maintains proper magnetic polarity.
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