By type (2-7), we can see that if I, KH was known, as long as the measured Hall voltage VBB ', the size of the magnetic field can be calculated; and if you know carrier type (n-type semiconductor majority carrier for electronic, P type semiconductor majority carrier hole), by the VBB' positive and negative can detect magnetic field direction. On the contrary, if we know the direction of the magnetic field, to determine the type of carrier.
Any physical content on magnetic induction intensity change will lead to changes in the output voltage of the hall. Accordingly, the hall element made various forms of the probe fixed in the proper locations of the system and to detect the magnetic field changes, according to the change of the output voltage of the hall extraction information detection. It is the working principle of the hall element.
Linear Holzer sensor UGN3503 main function is to detect the magnetic induction intensity signal linear conversion to voltage signal. Its function block diagram and the output characteristics as shown below: