Rotary variable differential transformer
(重定向自RVDT)


A rotary variable differential transformer (RVDT) is a type of electrical transformer used for measuring angular displacement.
More precisely, a Rotary Variable Differential Transformer (RVDT) is an electromechanical transducer that provides a variable alternating current (AC) output voltage that is linearly proportional to the angular displacement of its input shaft. When energized with a fixed AC source, the output signal is linear within a specified range over the angular displacement.