The Hall Effect Apparatus explores the Hall Effect in a gallium arsenide (GaAs) semiconductor. This Hall Effect Apparatus consists of a mounted n-type semiconductor chip on a traverse mechanism, a pair of coils, relay-controlled reversing switches, and a control unit with connecting cords. It can be used to explore systematic errors and their elimination, determine the conductivity of the semiconductor, and use the semiconductor to plot the coils’ magnetic field.

The Hall Effect is the generation of a side-to-side voltage in a conductor or semiconductor carrying a current when it is placed in a magnetic field. The effect is widely used in magnetic field sensors. It is associated with several well-known systematic errors, some of which can be eliminated by special measurement techniques.

• n-type GaAs Hall sensor chip
• Helmholtz coil pair 75mm effective diameter, 11.25mT central magnetic induction at 0.5A
• Two-axis mechanical traverse for field plotting
• Constant current sources for magnet (0-0.5A) and Hall driving current (0—3mA)
• Reversing switch for exploring the elimination of systematic error
• 3-1/2 digit current and voltage meters
• Metal storage case for the Hall Effect board