- a device for measuring electromotive force or potential difference by comparison with a known voltage.
- voltage divider.
Origin of potentiometer
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for potentiometer
The potentiometer must never be shunted around the B battery or the latter will soon run down.
In using either of these heterodyne receivers be sure to carefully adjust the B battery by means of the potentiometer.
Don't expect to get the best results with a gas-content detector tube without using a potentiometer.
Don't connect a potentiometer across the B battery or it will speedily run down.
By means of a potentiometer the galvanometer spot may be brought back to the original position.Response in the Living and Non-Living
Jagadis Chunder Bose
- an instrument for determining a potential difference or electromotive force by measuring the fraction of it that balances a standard electromotive force
- a device with three terminals, two of which are connected to a resistance wire and the third to a brush moving along the wire, so that a variable potential can be tapped off: used in electronic circuits, esp as a volume control
Sometimes shortened to: pot
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Word Origin and History for potentiometer
Online Etymology Dictionary, © 2010 Douglas Harper
- A mechanical variable resistor. See more at resistor.
- An instrument for measuring an unknown voltage by comparison with a known voltage, such as that of a generator.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.