The AC tachogenerator is used to measure the speed only in one direction. In AC tachogenerator the armature is provided with an AC winding, either single phase or three phase windings. Working: When the rotor is stationary
There are some advantages of DC tachogenerator which are given below. The DC tachogenerator has linear charactristic. In DC tachogenerator, temperature compensation is easily achived. It does not have zero speed error. It is capable to generate
AC tachogenerator DC tachogenerator The AC tachogenerator is use to measure speed only in one direction only. The DC tachogenerator is use to measure speed in both direction. It consists of a stator and a rotor arrangement