El puente de Wheatstone deriva su nombre del físico inglés Sir En un circuito puente, la disposición de las resistencias que lo caracterizan. Un Kelvin puente, también llamado puente de Kelvin doble y en algunos países Puente de Para medir tales resistencias, se requiere un circuito de puente diseñado para trabajar con resistencias de La operación del puente de Kelvin es muy similar al puente de Wheatstone, pero utiliza dos resistores adicionales. Un pont de Wheatstone és un instrument elèctric de mesura inventat per Samuel Hunter Christie el , millorat i popularitzat per Sir Charles Wheatstone a.

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Geophone Hydrophone Microphone Seismometer. The Kelvin bridge was specially adapted from the Wheatstone bridge for measuring very low resistances. Diode bridge H bridge.

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The primary benefit of the circuit is its ability to provide extremely accurate measurements in contrast with something like a simple voltage divider. Accelerometer Angular rate sensor Auxanometer Capacitive wheatshone sensor Capacitive sensing Gravimeter Inclinometer Integrated circuit piezoelectric sensor Laser rangefinder Laser surface velocimeter Lidar Linear encoder Linear variable differential transformer Liquid capacitive inclinometers Odometer Photoelectric sensor Piezoelectric accelerometer Position sensor Rotary encoder Rotary variable differential transformer Selsyn Sudden Motion Sensor Tachometer Tilt sensor Ultrasonic thickness gauge Variable reluctance sensor Velocity receiver.


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. Electrical meters Bridge circuits Measuring instruments English inventions Impedance measurements.

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The desired value of R x is now known to be given as:. Schering Bridge Wien bridge. Kelvin bridge Wheatstone bridge. 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.

To do so, one has to work out the voltage from each potential divider and subtract one from the other. Published in “Engineering Science and Education Journal”, volume 10, no 1, Februarypages 37— Air—fuel ratio meter Blind spot monitor Crankshaft position sensor Curb feeler Defect detector Engine coolant temperature sensor Hall effect sensor MAP xircuito Mass flow sensor Omniview technology Oxygen sensor Parking sensors Radar gun Speed sensor Speedometer Throttle position sensor Tire-pressure monitoring system Torque sensor Transmission fluid temperature sensor Turbine speed sensor Variable reluctance sensor Vehicle speed sensor Water sensor Wheel speed sensor.

This page was last edited on 8 Novemberat Some of the modifications are:. 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.

The equations for this are:. Views Read Edit View history. First, Kirchhoff’s first law is used to find the currents in junctions B and D:. From Wikipedia, the free encyclopedia. The concept was extended to alternating current measurements by James Clerk Maxwell in and further improved by Alan Blumlein around The Wheatstone bridge illustrates the concept of a difference measurement, which can be extremely accurate.

At this point, the voltage between the two midpoints B and Puentd will be zero. By using this site, you agree to the Terms of Use and Privacy Policy.


One of the Wheatstone bridge’s initial uses was for the purpose of soils analysis and comparison. Detecting zero current with a galvanometer can be done to extremely high precision.

PUENTE DE WHEATSTONE by Héctor Miguel Guzmán on Prezi

On the other hand, if the resistance of the galvanometer is high enough that I G is negligible, it is possible to compute R x from the three other resistor values and circito supply voltage V Sor the pyente voltage from all four resistor circuiot. Active pixel sensor Angle—sensitive pixel Back-illuminated sensor Charge-coupled device Contact image sensor Electro-optical sensor 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.

In many cases, the significance of measuring the unknown resistance is related to measuring the impact of some physical phenomenon such as force, temperature, pressure, etc. Retrieved from ” https: The Wheatstone bridge is the fundamental bridge, but there are fe modifications that can be made to measure various kinds of resistances when the fundamental Wheatstone bridge is not suitable.

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