autotransformer, auto-type transformer, one-coil transformer
transformer in which at least two windings have a common part, trafo, kus vähemalt kahel mähisel on ühine osa, electrical transformer which has a single winding of which part is common to both primary and secondary circuits, elektritrafo, millel ühe mähise osa on ühine nii primaar- kui ka sekundaarahelale