#electrode  a conductor used to make electrical contact with some part of a circuit
  supertype:  #conductor  a device designed to transmit electricity, heat, etc.
  part of:  #electric_battery  #electrolytic_cell  #electronic_equipment  #thermionic_vacuum_tube
  subtype:  #anode  a positively charged electrode by which electrons leave an electrical device
     subtype:  #plate.anode  the positively charged electrode in a vacuum tube
  subtype:  #base.electrode  (electronics) the part of a transistor that separates the emitter from the collector
  subtype:  #cathode  a negatively charged electrode that is the source of electrons in an electrical device
     subtype:  #photocathode  a cathode that emits electrons when illuminated
  subtype:  #collector.electrode  the electrode in a transistor through which a primary flow of carriers leaves the region between the electrodes
  subtype:  #electron_gun  the electrode that is the source of electrons in a cathode-ray tube or electron microscope; consists of a cathode that emits a stream of electrons and the electrostatic or electromagnetic apparatus that focuses it
  subtype:  #emitter  the electrode in a transistor where electrons originate
  subtype:  #control_grid__controlgrid__grid  an electrode placed between the cathode and anode of a vacuum tube to control the flow of electrons through the tube

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