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Glossary

  • Wafers : Unit constituted by a rotor, and of one or two stators involving the pieces of contact.
  • Simple wafer : Unit constituted by a rotor and a stator, the points of electric liaison between rotors can be displayed only on one side, or on both sides of the wafer.
  • Double wafer: Unit constituted by a rotor and two stators, without any electrical connection between the two stators. This wafer is equal to two simple wafers, on an electrical point of view. It allows to reduce the depth of the switch.
  • Twinned wafer : Unit constituted of a rotor and two stators in which the rotor creates one or more electrical liaisons between the two stators. This wafer is equivalent to a simple wafer on an electrical point of view.
  • Rotor : Movable insulating piece supplied of contacts or cams that which function is to establish the electrical liaisons.
  • Stator : Fixed insulating part containing fixed contacts.
  • Contact : It is the function allowing, upon order, the establishment of the current between two conductors.
  • Mobile contact : Conductive piece, attached to the rotor or moved by it, allowing to establish an electrical liaison with a fixed contact.
  • Fixed contact : Conductive piece, attached to the stator, allowing to establish an electrical liason with a mobile contact.
  • Shorting contact : A contact is shorting when the electrical function of the selected position is established before the electrical function of the previous position is interrupted.
  • Non-shorting contact : A contact is non-shorting when the electrical function of the selected position is established after the electrical function of the previous position is interrupted.
  • Circuit : Ensemble of a mobile contact and the contacts it explores.
  • Internal resistance : Resistance measured between the terminals of the rotary switch. This notion concerns both the contact resistance and the internal circuit and wiring resistance, if the switch is assembled with a connector.
  • Index angle : Positionning angle between two stable consecutive position.
  • Click mechanism : Mechanical device used to localise and maintain each position
  • Stop : Mechanical part used to limit the course of the rotor.
  • Cycle : Passage on all the positions, in one way and in the other way, starting from an initial position.
  • Switching : Passage between between two consecutive positions of the switch.