TELTRON TUBES ARE:
THE TEL 2501 UNIVERSAL STAND INCORPORATES A FILAMENT PROTECTION CIRCUIT TO PROTECT TUBES
THE TEL 2501 UNIVERSAL STAND INCORPORATES A FILAMENT PROTECTION CIRCUIT TO PROTECT TUBES

  • Perfect for the laboratory
  • Excellent for an introduction to atomic physics
  • Large enough to use for demonstration
  • Modular
  • In compliance with DHEW radiation safety standards


Systematic Study of the Electron
With Teltron tubes properties of the free electron and the electron within the atom can be studied. A logical progression of experiments can be performed with these tubes from thermionic emission of electrons from a hot filament to dual properties of the electron. Experimental instructions are included with each tube.



An Introduction to Atomic Physics
Knowledge of the electron is fundamental to an understanding of atomic structure. Teltron tubes and their accessories allow the teacher to provide students with a clear grasp of the nature of the electron, leading to a proper understanding of positive ions, radioactivity and x-rays.



Demonstrations
Teltron tubes are designed for use in the laboratory; however, the large size of the tubes and the stand used to hold the tubes make them excellent for classroom demonstrations. Intensity of the electron beam is such that lights in the classroom need only to be dimmed to see it clearly.



The Complete Assembly
The photograph above illustrates a typical assembly in which a tube is mounted in the Universal Stand. The experimental zone sphere is contained within the Helmholtz Coils to obtain magnetic deflection of a cathode ray beam.



TEL 2500 Lead Set

Provides all the connectors required for use with Teltron tubes.
TEL 2500-2 $88.00



TEL 2501 Universal Stand

Designed to accommodate the updated range of Teltron Tubes and accessories, the Universal Stand provides easy access to all plug and socket connections and gives a clear view of the experimental zone which is projected at a 20° angle. The tube can be rotated 5° to either side or vertical. A Filament Protection Circuit is an integral part of the Stand. Excessive AC or DC voltage will cause a trip condition which automatically resets after rectification of the fault condition. The Stand is mounted on rubber feet and weighs 570g. All Tube connections are made on the Stand itself.
TEL 2501-2 $ 596.00



TEL 2502 Helmholtz Coils

These magnetizing coils are supplied in pairs, each mounted in a slot in the Universal Stand. A metric scale within the Stand lets the coils be set in the Helmholtz configuration or in any other configuration up to 150mm maximum spacing between coils.

A single coil can be set in the front of the Stand to provide a field coaxial with the tube. Each coil has 320 turns of 22 Swg. enameled copper wire with a mean diameter of 138 x 10-3m. The coil provides a field of 3000 A/m (12vDC 1.0A) for continuous operation. A field of 4500 A/m (18v 1.5A) can be provided short term.

Recommended Accessories
TEL U33020 or U33000 Power Supply
TEL 2502 $ 603.00