Hall effect sensors and probes are components which use magnetism to calculate equations and in automotive applications, includes sensing camshaft position and TDC.
It was invented by physicist Edwin H. Hall in 1879.
A Hall effect sensor has a Hall integrated I.C, which corresponds with a magnet. It also has a steel chopper plate with recess gaps that interrupts the magnetic field built up from the Hall integrated I.C and the magnet.
Wire up the distributor. Connect an oscilliscope then spin the distributor and observe the waveform.
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Above is an oscilloscope pattern drawing of a hall effect sensor.
It is a square wave pattern.
1. The dwell period - Duty and firing time combined.
2. The duty cycle period - When the chopper plate is passing in front of the IC and the magnet, strengthening the magnetic field and increasing the voltage as it passes by.
3. The firing time - When the recess in the chopper plate passes in between of the I.C and magnet.
4. The peak voltage which is produced
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