Electrical Engineering ⇒ Topic : Measurement of Mutual Inductance

Measurement of Mutual Inductance :-

1. Heaviside bridge
2. Heaviside campbel equal ratio bridge

MEASUREMENT OF MUTUAL INDUCTANCE

Let M is unknown mutual inductance, L₁ is self inductance of secondary, L₂ is known self inductance, and R₁, R₂, R₃ and R₄ are non-inductive resistances as shown in Figure (a).

        figure (a) Mutual inductance bridge

         ......... (1)

   Equating real and imaginary parts, it can be written as:

              .............. (2)

                       ............... (3)

Therefore, M can be calculated from Eq. (3).