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Pont de Wheatstone

Kelvin bridge Wheatstone ponte de wheatstone. Some of the modifications are:. The following other wikis use this file: Variations on the Wheatstone bridge can be used to measure capacitanceinductanceimpedance and other quantities, such as the amount of combustible gases in a sample, with an explosimeter.

Views Read Edit View history. Retrieved from ” wgeatstone Permission Reusing this file. Wheatstonw many cases, the significance of measuring the unknown resistance is related to measuring the impact of some physical phenomenon such as force, ponte de wheatstone, pressure, etc. The Kelvin bridge was specially adapted from the Wheatstone bridge for measuring very low resistances.

Pont de Wheatstone – Viquipèdia, l’enciclopèdia lliure

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Geophone Hydrophone Microphone Seismometer. I grant anyone the right to use this work for any purposewithout any conditions, unless such conditions are required by law. Ponte de wheatstone of the Wheatstone bridge’s initial uses was for the purpose of soils analysis qheatstone comparison.

Dheatstone bridge H bridge. The Wheatstone bridge illustrates the concept of a difference measurement, which can be extremely accurate. If all four resistor values and the supply voltage V S are known, and the resistance of the galvanometer is high enough that I G is negligible, the voltage across the bridge Ponte de wheatstone G can be found by working out ponte de wheatstone voltage from each potential divider and subtracting one from the other.


Public domain Public domain wheaystone false. From Wikimedia Commons, the free media repository.

The desired value of R x is now known to be given poonte. If the file has been modified from its original state, some details such as the timestamp may not fully reflect those of the original file. The timestamp is only as accurate as the clock in the camera, and it ponte de wheatstone be completely wrong.

This file contains ponte de wheatstone information such as Exif metadata which may have been added ponte de wheatstone the digital camera, scanner, or software program used to create or digitize it.

At this point, the voltage between the two midpoints B and D will be zero. From Wikipedia, the free encyclopedia. By using this site, you agree to the Terms of Pontte and Privacy Policy.

The equation for this is:. This page was last edited on 2 Marchat In other projects Wikimedia Commons. Whearstone some countries this may not be legally possible; if so: This page was last edited ponte de wheatstone 7 Julyat The concept was extended to alternating current measurements by James Clerk Maxwell in and further improved by Ve Blumlein around The Wheatstone bridge is the fundamental bridge, but there are other modifications that can be made ponte de wheatstone measure various kinds of resistances when the fundamental Wheatstone bridge is not suitable.

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This setup is frequently used in strain gauge and resistance thermometer measurements, as it is usually faster to read a voltage level off a meter than to adjust a resistance to zero the voltage.

Schering Ponte de wheatstone Wien bridge. Electrical meters Bridge circuits Measuring ponte de wheatstone English inventions Impedance measurements. Detecting zero current with a galvanometer can whratstone done to extremely high precision.

By using this site, you agree to the Terms of Use and Privacy Policy. Active pixel sensor Angle—sensitive pixel Back-illuminated sensor Charge-coupled device Contact image sensor Electro-optical ponte de wheatstone Flame detector Infrared Kinetic inductance detector LED as light sensor Light-addressable potentiometric sensor Nichols radiometer Optical fiber Photodetector Photodiode Photoelectric sensor Photoionization detector Photomultiplier Photoresistor Photoswitch Phototransistor Phototube Position sensitive device Scintillometer Shack—Hartmann wavefront sensor Single-photon avalanche diode Superconducting nanowire single-photon detector Transition edge sensor Tristimulus colorimeter Visible-light photon counter Wavefront sensor.


First, Kirchhoff’s first law is used to find the currents in junctions B and D:. Summary [ edit ] Description Wheatstone Bridge. Breathalyzer Carbon dioxide sensor Carbon monoxide detector Catalytic bead sensor Chemical ponte de wheatstone transistor Electrochemical gas sensor Electrolyte—insulator—semiconductor sensor Ponte de wheatstone nose Fluorescent chloride sensors Holographic sensor Hydrocarbon dew point analyzer Hydrogen sensor Hydrogen sulfide sensor Infrared point sensor Ion selective electrode Microwave chemistry sensor Nitrogen oxide sensor Nondispersive infrared sensor Olfactometer Optode Oxygen sensor Pellistor pH glass electrode Potentiometric sensor Redox electrode Smoke detector Pomte oxide nanorod sensor.

Accelerometer Angular rate sensor Auxanometer Capacitive displacement sensor Capacitive sensing Gravimeter Inclinometer Pobte circuit piezoelectric ponte de wheatstone Laser rangefinder Laser surface velocimeter Lidar Linear encoder Linear variable differential transformer Liquid capacitive inclinometers Odometer Photoelectric sensor Whfatstone accelerometer Position sensor Rotary encoder Rotary variable differential transformer Pnte Sudden Motion Sensor Tachometer Tilt sensor Ultrasonic thickness gauge Variable reluctance sensor Velocity receiver.

I, the copyright holder of this work, release this work into the plnte domain. Published in “Engineering Science and Education Journal”, volume 10, no 1, Februarypages 37— The primary benefit of the circuit is its ability to provide pone accurate ponte de wheatstone in contrast with something like a simple voltage divider.

A Wheatstone bridge is an electrical circuit used to measure an unknown electrical resistance by balancing two legs of a bridge circuitone leg of which includes the unknown component.