Position transducers are used widely in industrial and applications, among them the linear variable differential transformer (LVDT) is excellent in performance compared to potentiometeric transducer to measure position and displacement. Displacement is the vector representing a change in position of a point with respect to a reference point. It can be either rotary or linear. The linear variable differential transformer type of displacement transducer particularly suitable as a short stroke, position measuring device. In given set up the open cage construction is provided to observe the basic construction of device. The LVDT consists of two identical secondries (symmetrically placed on both sides of primary), one primary coil and a movable core called actuator. The displacement to being measured is transferred to the magnetic core in flux linkage. When the primary coil is connected to a sinusoidal excitation source, the amount of voltage on the secondary S1 and S2 depends on the position of the core.