Hay’s bridge is used to measure the unknown value of Inductance. The instrument has following inbuilt parts fitted in a Teak wood case.
AC Source:The Bridge consist of sine wave signal of 1KHZ. The Amplitude of AC switch indicating lamp is provided on the bakelite board. Two sockets are provided for the output of AC signals.
Detector:For detecting small AC signals in the output, Null Detector is in-built with digital display
Circuit Diagram:The circuit layout on the board is quite spread out to facilitate convenient working & clear understanding. 4mm socket are provided for making connections.
Unknown Value:4 unknown value are supplied with instrument.
R2,R3:Three decade dial of x10, x100 and x1000 ohms
C:Decade dial of x0.1mfd.
R4:Fixed resistance of 100 ohms
