Hall Effect Sensor Hall effect : Dr. Edvin Hall , 1879 Johns Hopkins University Hall sensor : Joe Maupin & Evertt Vorthmann , 1965

Hall effect General features • True solid state • Long life • High speed operation - over 100 kHz possible • Operates with stationary input (zero speed) • No moving parts • Logic compatible input and output • Broad temperature range (-40 to +150°C) • Highly repeatable operation

Hall effect Theory

Hall effect Theory

Hall effect Theory

Hall effect Conditional Circuit !!! Silicon exhibits the piezoresistance effect

Hall effect Conditional Circuit

Hall effect Digital Hall sensors

Hall effect Analog Hall sensors

Hall effect Magnetic system Unipolar head-on mode Unipolar slide-by mode Bipolar slide-by mode Bipolar slide-by mode (ring magnet) Jump to Application

Hall effect Magnetic system Unipolar head-on mode Nonlinear Accuracy medium

Hall effect Magnetic system Unipolar slide-by mode Nonlinear Accuracy low Symmetric

Hall effect Magnetic system Bipolar slide-by mode Accuracy medium Dissymmetry

Hall effect Magnetic system

Hall effect Magnetic system Bipolar slide-by mode (ring magnet)

Hall effect Magnetic system comparison chart

Hall effect Application – Vane operated position sensors

Hall effect Application – Vane operated position sensors

Hall effect Application – Other in position Sequence sensor Proximity sensor Office machine sensors Multiple position sensor Anti-skid sensor Piston detection sensor

Hall effect Application – Sequence sensor Back

Hall effect Application – Proximity sensor Back

Hall effect Application – Office machine sensors Back

Hall effect Application – Multiple position sensor Back

Hall effect Application – Anti-skid sensor Back

Hall effect Application – Piston detection sensor Back