CENCO® Hall Effect

Explore the Hall Effect in a GaAs semiconductor.

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

Explores systematic errors and their elimination. Determines the conductivity of the 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.

Uses 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.