Hall Effect Sensor Circuit

Control a relay with arduino and hall effect sensor.

Hall effect sensor circuit.

In the linear sensor the output voltage is linearly related to magnetic flux density. Although the hall effect sensor is a magnetic field sensor it can be used as the principle component in many other types of sensing devices current temperature. When a magnetic source comes in close proximity to the hes it supplies a negative trigger pulse to the timer. The circuit diagram for controlling a 5v relay module with hall effect sensor and arduino is shown below.

For more on the general operation see my you tube video above. The hall effect sensor we will use in this circuit is an a1302 hall effect sensor manufactured by allegro. The simple circuit diagram can be seen below. This ic can detect magnetic fields.

Hall effect sensors are used for proximity sensing positioning speed detection and current sensing applications. 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. Based on the relation between hall voltage and magnetic flux density hall effect sensors are of two types. Hall effect sensor circuit.

Here two hall effect sensors are used to detect the north pole and the south pole of the magnet. Whenever the hall effect sensor is subjected to a magnetic field it toggles the relay as per the code. The working of this circuit is very simple. In the threshold sensor at each magnetic flux density the output voltage will have a sharp decrease.

Applications of hall. 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. 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. The hall effect switch the hall effect latch and the ratiometric or analog output sensor.

There are three basic types i m concerned with here. Hall effect sensors are solid state magnetic sensor devices used as either magnetic switches or to measure magnetic fields. Frequently a hall sensor is combined with threshold detection so that it acts as and is. 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.

Resistor r1 acts as a positive bias for the for the input at pin 2. A hall effect sensor or simply hall sensor is a device to measure the magnitude of a magnetic field its output voltage is directly proportional to the magnetic field strength through it. Forms a hall effect sensor. A sensor can be used to trigger a timer for a specific duty.

The circuit diagram for the magnetic polarity detector is given below.