potentiometer Archives | Electrical Shouters

Electrical measuring instrument

A.C. Potentiometers

Introduction: The most important difference between a de. And a.c. potentiometer is that, in a d.c, potentiometer, only the magnitude of the unknown emf and potentiometer voltage drop have to be made equal to obtain balance. But in a.c. potentiometer, both magnitude and phases of unknown emf and potentiometer voltage Read more…

By Sachidananda Dhar, 3 months3 months ago

Electrical measuring instrument

Gall-tinsley (co-ordinate type) a.c. Potentiometer

Connection of Gall – Tinsley a.c. Potentiometer This potentiometer consists of two separates potentiometer circuits enclosed in a common case. One is called the “in-phase” potentiometer and the other the “quadrature” potentiometer. The slide-wire circuits are supplied with currents which have a phase difference of 90˚. On the first of Read more…

By Sachidananda Dhar, 3 months3 months ago