Hall Effect Sensor Circuit Symbol

Also available from some manufacturers is a three pin surface mount package.

Hall effect sensor circuit symbol. Hall effect sensors are used for proximity sensing positioning speed detection and current sensing applications. The hall effect sensor we will use in this circuit is an a1302 hall effect sensor manufactured by allegro. 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. The circuit diagram shown here is of a hall effect switch.

Hall effect sensor ic dn6848 from panasonic is the heart of the circuit. Forms a hall effect sensor. 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. The current package for the hall effect sensor is very much like a transistor.

The heart of every micro switch hall effect de vice is the integrated circuit chip that contains the hall element and the signal conditioning electronics. The hall effect sensors ha hb and hc are usually included in the motor. Symbols of electronic sensors transducers detectors. 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.

The dn6848 has a built in hall effect sensor schmitt trigger circuit power supply regulator and temperature compensation circuits integrated to a single chip. Typical data applies to v cc 12 v and t a 25 c characteristic symbol test conditions min. For example when the ha sensor is under the n pole of the permanent magnet it outputs signal 1 otherwise 0. Analogue hall effect sensor.

An analogue hall effect sensor circuit is shown in figure 3 which gives the analogue output voltage which are proportional to exposed magnetic field. Valid over operating voltage and temperature ranges unless otherwise noted. This ic can detect magnetic fields. Frequently a hall sensor is combined with threshold detection so that it acts as and is called a switch commonly seen in industrial applications such as the pictured pneumatic cylinder they are also used in consumer equipment.

If we compared this sensor with basic hall effect sensor then this type of sensor gives the stable behavior in noisy environment and have large voltage range to operate. For example some computer printers use them to. 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. It is a three lead in line device in a low level transistor size black plastic case.

Transistors have a curved back while hall effect sensors have a flat back.