Concentrator

2 definitions found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  Concentrator \Con"cen*tra`tor\, n. (Mining)
     1. An apparatus for the separation of dry comminuted ore, by
        exposing it to intermittent puffs of air. --Knight.
  
     2. (Firearms) A frame or ring of wire or hard paper fitting
        into the cartridge case used in some shotguns, and holding


        the shot together when discharged, to secure close
        shooting; also, a device for slightly narrowing the bore
        at the muzzle for the same purpose.
        [Webster 1913 Suppl.] Concentric

From The Free On-line Dictionary of Computing (27 SEP 03) [foldoc]:

  concentrator
       
           A device that combines the data streams from
          many simultaneously active inputs into one shared channel in
          such a way that the streams can be separated after
          transmission.  The concentrator's output bandwidth must be at
          least as great as the total bandwidth of all simultaneously
          active inputs.  A concentrator is one kind of {multiplexing}
          device.
       
          For example, a concentrator may be used to connect 24 2400 bps
          TTYs to a host via a 57600 bps channel.
       
          (2000-03-01)