Uploaded February 2026 | Updated September 2026, 2 weeks ago
In this video, we explore how a Hall sensor measures magnetic fields and explain an important concept known as the projection effect. Hall sensors detect magnetic field strength by measuring the voltage generated when a current-carrying conductor is exposed to a magnetic field. However, what the sensor actually measures is not the total magnetic field, but the component of the field that is perpendicular to the sensor surface.
Through demonstrations and visual explanations, this video shows how the orientation of the Hall sensor relative to the magnetic field changes the measured signal. We illustrate how rotating the sensor alters the detected field strength, revealing how vector components of the magnetic field are projected onto the sensor’s sensitive axis.
This video is ideal for students, engineers, hobbyists, and anyone interested in magnetics, sensors, or electromagnetic measurement techniques. By the end, viewers will gain an intuitive and practical understanding of how Hall sensors work and why sensor orientation is critical when making accurate magnetic field measurements.
In this video, we explore how a Hall sensor measures magnetic fields and explain an important concept known as the projection effect. Hall sensors detect magnetic field strength by measuring the voltage generated when a current-carrying conductor is exposed to a magnetic field. However, what the sensor actually measures is not the total magnetic field, but the component of the field that is perpendicular to the sensor surface.
Through demonstrations and visual explanations, this video shows how the orientation of the Hall sensor relative to the magnetic field changes the measured signal. We illustrate how rotating the sensor alters the detected field strength, revealing how vector components of the magnetic field are projected onto the sensor’s sensitive axis.
This video is ideal for students, engineers, hobbyists, and anyone interested in magnetics, sensors, or electromagnetic measurement techniques. By the end, viewers will gain an intuitive and practical understanding of how Hall sensors work and why sensor orientation is critical when making accurate magnetic field measurements.
