Anderson Bridge with Oscillator and Null Detector

Anderson Bridge with Oscillator and Null Detector

Anderson Bridge is used to measure unknown value of Inductance.

The instrument has following inbuilt parts fitted in a ABS Plastic 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.

R:  Single decade resistance dials having value 100ohms 10ohms and continuously   variable resistance from 0-100 ohms connected in series with the dial R

r ---- Three decade resistance dials having value 10ohms 1000ohms, 10ohms 100ohms and 10ohms 10ohms
P=Q --- Fixed standard resistances having value 1000 ohms.
C   ---- Two  Fixed standard capacitors having value 0.1mf and 0.2mf. (loss free)