Hall Effect Speed Sensor Circuit

The sndh h series hall effect speed sensors use a magnetically biased hall effect integrated circuit to accurately sense movement of ferrous metal targets.

Hall effect speed sensor circuit.

The specially designed ic integrated circuit and a permanent magnet are sealed in rugged probe type packages the flux density of the permanent magnet alters when approached by ferrous metal. Frequently a hall sensor is combined with threshold detection so that it acts as and is called a. Hall effect sensors consist basically of a thin piece of rectangular p type semiconductor material such as gallium arsenide gaas indium antimonide insb or indium arsenide inas passing a continuous current through itself. When the device is placed within a magnetic field the magnetic flux lines exert a force on the semiconductor material which deflects the charge carriers electrons and.

Hall effect sensors are used for proximity sensing positioning speed detection and current sensing applications. Circuit diagram using hall effect sensor. Hall sensor reacts to magnetic field and changes its output depends on the polarity of magnet and magnetic field strength still now used in many applications by using this types of sensor we can create multipurpose hall effect sensor circuit. The hall effect sensor we will use in this circuit is an a1302 hall effect sensor manufactured by allegro.

The hall effect sensor explained above can be quickly configured through a few external parts for converting magnetic field into electrical toggling pulses for controlling a load. The simple circuit diagram can be seen below. We will then connect this ic to an arduino so that we the arduino can read the voltage output by the a1302 and we can display the readings to the computer screen. Its output voltage is directly proportional to the magnetic field strength through it.