Linear variable differential transformer

Cutaway view of an LVDT. Current is driven through the primary coil at A, causing an induction current to be generated through the secondary coils at B.

The linear variable differential transformer (LVDT) – also called linear variable displacement transformer,[1] linear variable displacement transducer,[2] or simply differential transformer[3] – is a type of electrical transformer used for measuring linear displacement (position along a given direction). A counterpart to this device that is used for measuring rotary displacement is called a rotary variable differential transformer (RVDT).

  1. ^ "Borehole stress property measuring system".
  2. ^ http://www.omega.com/manuals/manualpdf/M1120.pdf [bare URL PDF]
  3. ^ Baumeister & Marks 1967, pp. 16–8