Galvanometer
- 1. IN THE NAME OF ALLAH THE MOST MERCIFUL AND BENIFICIENT
- 2. GROUP NAME MAAZ HUSSAIN BSEC-01093146 AREEB IQBAL BEC-01091035 RAMEEZ AHMAD MUGHAL BEC-01091032 ZEESHAN BSEC-01093119R
- 3. TODAY’S TOPIC GALVANOMETER INTRODUCTION PRINCIPLE CONSTRUCTION WORKING APPLICATIONS
- 4. INTRODUCTION Galvanometer is an electromechanical instrument which is used for the detection of electric currents through electric circuits. Being a sensitive instrument, Galvanometer can not be used for the measurement of heavy currents. However we can measure very small currents by using galvanometer but the primary purpose of galvanometer is the detection of electric current not the measurement of current.
- 6. WORKING PRINCIPLE The Basic principle of Galvanometer is PMMC (permanent magnetic moving coil) Galvanometer works on the principle of conversion of electrical energy into mechanical energy. When a current flows in a magnetic field it experiences a magnetic torque. If it is free to rotate under a controlling torque, it rotates through an angle proportional to the current flowing through it.
- 7. WORKING When a current passes through the galvanometer coil, it experiences a magnetic deflecting torque, which tends to rotate it from its rest position. As the coil rotates it produces a twist in the suspension strip. The twist in the strip produces an electric restoring torque. The coil rotates until the elastic restoring torque due to the strip does not equal and cancels the deflecting magnetic torque, then it attains equilibrium and stops rotating any furthers.
- 9. CONSTRUCTION
- 11. APLLICATION S