Sensors and Control Systems (Electrical and Electronic Engineering) Lab Report

Sensors and Control Systems (Electrical and Electronic Engineering) - Lab Report ExampleRotating a DC electric motors rotor like tacho generators will produce electricity and voice-coil speaker cigaret also act as microphones.It consist of a nickel wire of 0.5-1 mm diameter kept stretched between the poles of a permanent magnet and having a small stylus rigidly attached to it at the mid-point. The wire is prestressed by twisting it, before being installed into the position. Two pick-up coils of fine wire are pain round the wire on either attitude of the mid-point. Any displacement of the stylus to one side or the new(prenominal) increases the torsion on the side and decreases it by an equal amount on the new(prenominal) side. This results in an increase of magnetic flux in one-half and a decrease in the other half. The corresponding induced emfs are in phase opposition and are processed by capable networks as in the case of linear variable differential transformer. It is used as phonograph pick-up and is designed to have flat frequency response over 150 Hz- 15 kHz frequency range. ascribable to the nonlinearity and hysteresis in the performance, it is normally limited for use when time- varying torsions of small amplitude are to be measured.It was detect in 1879 and belongs to one of the galvanomagnetic phenomena in which the interaction between the magnetic knowledge domain and the moving electrical charges results in the development of forces that alter the motion of the charge. When an external magnetic field is applied to the current carrying hall particle perpendicular to the current flow a Lorentz force acts on the current due to which a electric potential called hall voltage is generated perpendicular to both the current and the magnetic field. This voltage is so small and needfully amplification.If an electric current flows through a conductor in a magnetic field, the magnetic field exerts a transverse force on the moving charge carriers wh ich tends to push them to one side of the