Electrical Engineering Analog Signals, Network and Measurement Virtual Laboratory Experiments

Measurement of Self Inductance by Maxwell Bridge            

Procedure

Rm501 Figure

Fig 1: Circuit Diagram for Measurement of Self Inductance by Maxwell Bridge

  1. Apply Supply voltage from the signal generator with arbitrary frequency. ( V =3v). Also set the unknown Inductance value from 'Set Inductor Value' tab.
  2. Then switch on the supply to get millivoltmeter deflection.
  3. Choose the values of L2, r2, R2, R3 and R4 from the inductance and resistance box. Varry the values to some particular values to achieve "NULL".
  4. Observe the millivoltmeter pointer to achieve "NULL".
  5. If "NULL" is achieved, switch to 'Measure Inductor Value' tab and click on 'Simulate'. Observe the calculated values of unknown inductance (L1) and it's internal resistance (R1) of the inductor.
  6. Also observe the Dissipation factor of the unknwown inductor which is defined as

$$ \frac{\omega L}{R} \ Where, \omega=2 \pi f $$