Build this simple magnetic pendulum with very few components.
Magnetic hall effect sensor circuit.
Electromagnet is on during only 20ms and battery power drain is low.
A hall effect sensor is used to trigger a timer ic.
When a magnet is placed in the vicinity.
Hall effect sensor is used to detect the presence of magnetic field and push the pendulum in the exact moment.
Magnetic pendulum with hall effect sensor.
This ic can detect magnetic fields.
Here taken hall effect sensor drv5013 from texas instruments it is a digital latch hall effect sensor and operates with wide voltage ranges 2 5 to 38v.
Here two hall effect sensors are used to detect the north pole and the south pole of the magnet.
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.
Resistor r1 acts as a positive bias for the for the input at pin 2.
We can use this voltage to detect that whether the magnetic is placed near the sensor or.
When a magnetic source comes in close proximity to the hes it supplies a negative trigger pulse to the timer.
The analog hall sensor module contains a hall sensor.
Forms a hall effect sensor.
The circuit diagram for the magnetic polarity detector is given below.
The device includes an on chip hall voltage generator for magnetic sensing a comparator that amplifies the hall voltage and a schmitt trigger to provide switching hysteresis for noise rejection and open collector output.
A sensor can be used to trigger a timer for a specific duty.
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.
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.
We have previously interfaced hall sensor with arduino and raspberry pi and made few projects using hall sensor like digital speedometer magnetic door alarm etc.
It thus becomes useful for measuring the strength of magnetic fields and in applications that require an output switched through magnetic triggers.
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 heart of every micro switch hall effect de vice is the integrated circuit chip that contains the hall element and the signal conditioning electronics.
A hall effect sensor is much smaller but can handle less current than a reed switch.
