Principle and Working:
When a conductor through which current is flowing, is placed in the magnetic field, a potential difference is generated between two opposite edges of the conductor in the direction mutually perpendicular to both the field and the conductor. This potential developed is Hall voltage & this phenomenon is called Hall effect.
In the present setup, the crystal mount on PCB is placed perpendicular to the magnetic pole pieces. Magnetic field is produced by electromagnet operated by 0-20V, 5A power supply. Field intensity measured by digital gauss meter with gauss probe. A constant current (0-20mA) is passed through the crystal and induced hall voltage is measured on digital display.
