#transformer  an electrical device by which alternating current of one voltage is changed to another voltage
  supertype:  #electrical_device  a device that produces or is powered by electricity
  subtype:  #coil.transformer  #step-down_transformer  #step-up_transformer  #Tesla_coil  #voltage_regulator
  part:  #induction_coil__inductioncoil  a coil for producing a high voltage from a low-voltage source
     part:  #spark_gap__sparkgap  the gap between two high-potential terminals
  part:  #primary_coil__primarycoil__primary_winding__primarywinding__primary  coil forming the part of an electrical circuit such that changing current in it induces a current in a neighboring circuit; "current through the primary coil induces current in the secondary coil"
  part:  #secondary_coil__secondarycoil__secondary_winding__secondarywinding__secondary  coil such that current is induced in it by passing a current through the primary coil

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