• Teltron Dual Beam Tube S

  • 261-022
  • Out of Stock
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  • £634.50excluding VAT

    £761.40 including VAT

  • Teltron Discharge Tubes
    The Teltron range of demonstration discharge tubes
    has been designed to show the properties of the free

    The D range is the original Teltron range with connections
    fixed on the tubes. The S range is a newer range with
    connections on the stand rather than the tubes.
    Please note the ranges are not interchangeable.

    Teltron Dual Beam Tube S
    Semi-evacuated electron tube filled with low-pressure
    helium and containing a tangential and axial electron
    gun. In the case of tangential bombardment and a perpendicularly
    aligned magnetic field, the fundamental
    electron charge-to-mass ratio can be determined from
    the diameter of the observed beam pattern. In the case
    of axial bombardment and a co-axial magnetic field,
    kinetic gas theory (e.g. impact excitation) and particle
    collisions can be studied through observations of the
    fine, luminescent beams resulting from excitation of
    the helium atoms. Instructions included

    Other equipment for use with the Teltron tubes:
    605-006 EHT Power Supply
    261-031 Digital Meter with two shunts included
    231-080 Shrouded Test Lead Red
    231-081 Shrouded Test Lead Black

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Technical Specification


  • Max. filament voltage: 7.5 V
  • Max. anode voltage: 300 V DC
  • Anode current: approx. 30 mA at 200 V (anode)
  • Max. deflection voltage: 50 V DC.

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