This article discusses about Potentiometers, construction, working, its applications and also different types which include rotary and linear Potentiometer. Free Ebooks dc crompton potentiometer theory for download in PDF, MOBI, EPUB, HTML for Amazon Kindle and other Ebooks Readers. Potentiometers. Introduction. A Basic dc Potentiometer. Crompton’s dc Potentiometers. Applications of dc Potentiometers. AC Potentiometers.

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The combination of dial resistors and the slide wire is set to the standard cell voltage. As the balance is approached, the protective resistance is shorted, and final adjustments are made to obtain true balance.

The standardisation should be again checked after the completion of the measurement. The standardisation of the potentiometer is checked again by returning the switch S to the calibrate position.

DC Crompton’s Potentiometer or Laboratory Type Potentiometer

This potentiometer uses the Kelvin Varley arrangement shown below. These difficulties to get accurate results mainly arise because of lack of uniformity of slide wire and the cro,pton in maintaining the contacts in good shape. Thus, these products are widely used in diverse sectors such as laboratories, health care sector and medical institutions.

If the new reading does not agree with the old one, the second measurement of unknown emf must be made. Get Best Price Request a quote. There is one dial switch with fifteen steps, each having potetniometer precision resistor. In the above figure, the total resistance of measuring of the circuit, Rm consists of resistance of the main dial in series with that of slide wire. The figure below shows a separate standard cell dial incorporated in a single range potentiometer.


In order to operate the galvanometer at its maximum sensitivity provision is made to short the protective resistance when near the balance conditions. Find more suppliers in Faridabad Carbon Potentiometer in Faridabad. The main dial setting is kept nearly equal to the emf being measured.

Now, the positive terminal of a standard cell is connected to point A on the resistor and negative terminal of pofentiometer same is connected with a galvanometer.

That means, emf of the standard cell is just balanced by the voltage appearing in the resistor across point A and B. Supposing the value of emf of the standard cell is 1. The value of the unknown emf is obtained by adding the galvanometer reading to the main dial setting. Crompton Potentiometer Get Latest Crompotn. Nature of Business Manufacturer.

There is also a single turn circular slide wire. Now let’s think about another circuit, where a battery is connected across a resistor via a switch and a rheostat as shown in the figure below.

Number of Employees Upto 10 People. Laboratory-type or DC Crompton’s Potentiometer: The above requirement means that the voltage E ac in above figure remains the same for both positions of range switch S.

DC Crompton’s Potentiometer or Laboratory Type Potentiometer

In this potentiometer, only one or two main dials, consisting of decade resistance boxes, are used. The simplified diagram is shown below.


Year of Establishment Find more suppliers in Faridabad Carbon Potentiometer potentiometdr Faridabad. The circuit of a single potentiometer may be modified in a simple way to add a second range, which is usually by a second factor, such as 0. I agree to the terms and privacy policy. Number of Employees 11 to 25 People.

Potentiometer Working Principle of Potentiometer

Single range potentiometer using independent calibrating circuit. The measuring circuit current I m must be equal to 10 mA in order to produce a voltage drop of 1.

Our products are widely renowned for their salient features such as reliability, durability, cutting edge clarity and optimum performance. As the balance or null potentikmeter is approached, the protective resistance is shorted so as to increase the sensitivity of the galvanometer. Duo range type potentiometer. Thus the galvanometer scale can be calibrated to read the out of balance emf directly.

Crompton Potentiometer Complete Setup

Product Description Our company is devotedly engaged in supplying a wide assortment of Crompton Potentiometer that is designed using the latest technology. The switch S is then thrown to the operate position and unknown emf is read by adjusting the measuring circuit dial and slide wire. When the range switch S is thrown to position x 0.