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Electrical Commutators

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Electrical commutators are rotary switching devices that convert alternating current generated within a rotating armature winding into direct current output, employing segmented copper or silver-alloy commutator bars, mica or micanite inter-segment insulation, and carbon or graphite brush assemblies to maintain continuous sliding electrical contact across DC motors, generators, and starter-generator units used in aerospace powerplant and actuation applications.

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