Measurement of Self Inductance of High Quality Factor Coil by Hay's Bridge            

Procedure

Fig 1: Measurement of Self Inductance of High Quality Factor Coil by Hay's Bridge

1. Connect all the components and the air cored coil as shown in the Fig. 1.
2. Set the voltage at a convenient value (say, V=3V) . Set the resistances R₂, and R₃ at a convenient value and obtain the balance by varying R₄ and C₄.
3. Decide the ranges for R₄ and C₄ through which they can varied until milivoltmeter (mV) value would be zero.
4. Repeat the procedure with different values of the product R₂R₃ and decide upon readings that permit maximum accuracy for the measurement.