Hall Effect n-doped Germanium - SE-7260

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The Hall Effect includes the Hall probe, power supply, electromagnet and track. it is shown in use here with a PASPORT Magnetic Field Sensor and 550 Universal Interface.

Overview

The Hall Effect experiment (conducted by Edwin Hall in 1879) determines the sign of the charge carriers in current flow. A current can be thought of as a negative charge moving in one direction (Figure 1) or as a positive charge moving in the opposite direction (Figure 2). To determine which it actually is, a semiconductor is immersed in a magnetic field transverse to the direction of the flow of current. 

The moving charge experiences a qv x B force, causing  a charge build up on one side of the semiconductor (creating an electric field), which in turn leads to a qE force. The direction of the electric field will depend on the sign of the charge carriers and the polarity of the Hall voltage across the semiconductor reveals the sign.

The magnitude of the Hall voltage is dependent on the current, the charge carrier density, and the magnitude of the electric field. In modern day electronics the Hall effect is used to measure the magnitude and direction of magnetic fields.

The PASCO Advantage

The open design of this Hall Effect apparatus makes it possible for students to see the direction of the current and the magnetic field, enabling them to use the sign of the Hall voltage to deduce the sign of the charge carriers. 

Figure 1 and Figure 2

Special Features

  • Variable magnetic field and current
  • Open design makes the current direction clear
  • Works with the 550 or 850 Universal Interfaces

Includes

  • Hall Probe Unit, n-Semiconductor (GaAs)
  • Hall Effect Power Supply
  • U-Core Electromagnetic Coil
  • Track, Length 40 cm
  • Optical Carrier (2)
  • Adjustable Post Holder with 9 cm post (2)
  • Banana Cords (6)
  • Connecting Cables for 550/850 Interface (2)
  • Manual
  • Specifications

    n-Doped Semiconductor Material
    • GaAs
    Hall sensitivity
    • ≥ 150 mV/(mA⋅T)
    U-Core Electromagnetic Coil
    • 1000 Turns
    Magnet Space
    • 10 mm
    Magnet Field
    • 0 to 0.065 T (at 1 A)
    Excitation Current
    • 0 to 1 A DC
    Hall Voltage
    • 0 to 1.9999 V
    Power Supply
    • Digital readout for Current, Hall Voltage, and Magnet Current

    Buying Guide

    2784389
    UI-5001
    550 Universal Interface
    1
    629561
    UI-5000
    850 Universal Interface
    1
    Required - One of the following

    Note: This apparatus can be used manually by reading the digital displays and measuring the magnetic field using a Tesla meter. To automatically collect data requires a 550 or 850 Universal Interface (connector cables are included), PASCO Capstone software and a magnetic field sensor. 

    550 Universal Interface   UI-5001
    850 Universal Interface   UI-5000
    56459
    PS-2162
    PASPORT 2-Axis Magnetic Field Sensor
    Required for Universal Interface Use

    Note: This apparatus can be used manually by reading the digital displays and measuring the magnetic field using a Tesla meter. To automatically collect data requires a 550 or 850 Universal Interface (connector cables are included), PASCO Capstone software and a magnetic field sensor. 

    PASPORT 2-Axis Magnetic Field Sensor   PS-2162

    Interface Required

    A 550 Universal Interface or 850 Universal Interface is required for use with this product.  Compare the 550 and 850.

    Have specific questions or need more information? Contact Teacher and Technical Support.  We're here to help!

    Software Required

    This product requires or recommends PASCO Capstone for data collection and analysis.