https://hertechknowledgy.com/how-your-hall-effect-current-sensors-do-their-job/

temporary applications like wheel speed and position sensors within vehicles as well as switches, MEMS compasses and proximity sensors. They are Hall Effect current sensors occur when a magnetic field applied to a conductor and current flows through it and causes the charge carriers to shift, creating a measurable voltage. There are two types of Hall Effect sensors are available that are analog and digital output sensors. Analog sensors feature a linear output and are employed for measuring proximity, while digital sensors are equipped with two output states and are used for limit switches and detection in Industrial automation equipment. Hall Effect sensors can also be utilized to gauge wheel speed and identify the position of the crankshaft and camshaft in engines. Hall effect sensors are used for a broad range of settings, ranging including automotive sensors and medical sensors to medical. These sensors are more reliable, accurate, and long-lasting than magnets and are typically preferred in a variety of situations.
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