Autotransformer

1 definition found

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

  Autotransformer \Au`to*trans*form"er\, n. [Auto- + transformer.]
     (Elec.)
     A transformer in which part of the primary winding is used as
     a secondary winding, or vice versa; -- called also a
     {compensator} or {balancing coil}.
     [Webster 1913 Suppl.]