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The Science Behind Hall Effect Current Sensors Explained

October 7, 2022 by infomax

A Hall effect sensor, sometimes known as a Hall sensor, earns its name by utilizing the Hall effect to detect the presence and strength of a magnetic field. It was named after the famous American physicist Edwin Hall. These useful devices have a variety of applications, including current sensing, proximity sensing, positioning, and speed detection. This is because the output voltage of these current sensors is directly proportional to the strength of the magnetic field present. While there’s no denying the practicality of these applications, some who are unfamiliar with the science involved might be curious about what principles of physics that power these devices.


Video Source

Watch this informative video to learn more and better understand the inner workings of Hall current sensors.

If you dissect a Hall current sensor, you’ll find a thin strip of metal with a current applied to it. If there is a magnetic field present perpendicular to the direction of the current, the charge carriers will be deflected. This event causes a difference in voltage between the sides of the metal strip. The power of the voltage will increase in proportion to the strength of the magnetic field. This has useful applications in wheels and shafts.

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