Hall Effect Sensor Circuit Symbol

Analogue hall effect sensor.

Hall effect sensor circuit symbol.

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. An analogue hall effect sensor circuit is shown in figure 3 which gives the analogue output voltage which are proportional to exposed magnetic field. For example when the ha sensor is under the n pole of the permanent magnet it outputs signal 1 otherwise 0. The hall effect sensors ha hb and hc are usually included in the motor.

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. The circuit diagram shown here is of a hall effect switch. The hall effect sensor is a sensing switch that outputs a logic level based on the magnetic field detected. Hall effect sensor ic dn6848 from panasonic is the heart of the circuit.

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 current package for the hall effect sensor is very much like a transistor. Symbols of electronic sensors transducers detectors. This ic can detect magnetic fields.

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. A1233 dual channel hall effect direction detection sensor ic allegro microsystems llc 4 955 perimeter road manchester nh 03103 3353 u s a. Also available from some manufacturers is a three pin surface mount package.

The dn6848 has a built in hall effect sensor schmitt trigger circuit power supply regulator and temperature compensation circuits integrated to a single chip. It is a three lead in line device in a low level transistor size black plastic case. Typical data applies to v cc 12 v and t a 25 c characteristic symbol test conditions min. 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.

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. Valid over operating voltage and temperature ranges unless otherwise noted. For example some computer printers use them to. 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.

Forms a hall effect sensor.