Josef Janisch

Josef Janisch
Josef Janisch

Stories by Josef Janisch

Understanding Integrated Hall Effect Rotary Encoders

Linear Hall sensors generate a DC output voltage proportional to the strength of an applied magnetic field and can be used for high-resolution angle sensors when placed near a diametrically magnetized magnet. The rotating magnet generates a sinusoidal waveform, one full wave per revolution. This type of setup can be used only for a limited angular range because the output voltage (in relation to the rotation angle) is ambiguous at angles >90? in both directions from the zero crossing point.