TELTRON TUBES (Original style tubes still available. Call for prices.)
INTRODUCTION | FINE BEAM TUBE |
PLANAR DIODE | PLANAR TRIODE | GAS-FILLED (HE or NE) PLANAR TRIODE |
THOMSON e/m TUBE | LARGE DIAMETER FINE BEAM e/m TUBE |
HERTZ TUBE DATA ACQUISITION SYSTEM | FRANCK-HERTZ TUBE |
ELECTRON DIFFRACTION TUBE| POWER SUPPLIES |
CLASSICAL ELECTRON PHYSICS SYSTEM | TUBE ACCESSORIES
TEL 2523 Maltese Cross
TEL 2523 MALTESE TUBE
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- linear propagation of cathode rays
- deflection by a magnetic field, a particle-nature effect
- electrostatic charging, image distortion, a particle-nature effect
- introduction to electron optics, inversion magnification, reduction, aberration, a wave-nature effect (use one coil of TEL 2502)
- comparison of cathodic stream and electromagnetic radiation
- postulation of the de Broglie theory of duality
The diode gun, a tungsten wire “hairpin” filament and a cylindrical anode, projects a wide beam of cathode rays into the evacuated experimental zone. A beam of light from the hot filament is also projected into the experimental zone. Comparisons can be made of the respective shadows cast on the luminescent screen by the interception of both beams by the Maltese Cross. All connections are made on the Universal Stand.
Power supply
Anode voltage, 2000-5000V DC
Maximum filament voltage, 7.5V
Anode current at 4000V, 150µA
Recommended Accessories
TEL EV 14 Power Unit
TEL 2522 Luminescent Tube
TEL 2522
LUMINESCENT TUBE
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- establishment of the cathode ray gun (diode electron gun)
- excitation of luminescence by ultraviolet light.
- excitation without ionization, no charge emitted
- persistence and infrared quenching
- The metastable state of excitation
- Different colors, analysis spectroscope
- Introduction of concept of excitation potentials
The Luminescent Tube comprises a simple diode electron gun in a cylindrical neck and three mica flags coated with different phosphors mounted on a metal support and located in the center of an evacuated spherical glass bulb.
The diode gun, a tungsten wire “hairpin” filament and a cylindrical anode, projects a wide beam of cathode rays into the experimental zone. This beam is intercepted by the phosphor screens. All connections are made on the Universal Stand.
Power supply
Anode voltage, 2000-5000V, DC
Maximum filament voltage, 7.5V.
Anode current at 4000V, 150µA.
Recommended Accessories
TEL EV 14 Power Unit
TEL 2524 Perrin Tube
- evidence of the particular nature of cathode rays
- establishment of negative sign of charge
- introduction of the “electron” as an atomic particle
- electron deflection sensitivity studies
- the concept of a “time-base”
- operation of a cathode ray oscilloscope
- simple Lissajous’ figures
The diode gun, a tungsten wire “hairpin” filament and a cylindrical collimating anode, projects a narrow beam of cathode rays into the evacuated experimental zone. This beam traverses the sphere to impinge on the luminescent screen in a spot about 4 mm in diameter. The narrow beam may be deflected in a vertical plane to enter the Faraday cage by using Helmholtz Coils, TEL 2502. A further and horizontal deflection can be obtained using Secondary Coil, TEL 2507 thereby constructing a simple cathode ray oscilloscope. All connections are made on the Universal Stand.
Power supply
Anode Voltage, 1500-5000 V DC
Maximum filament voltage, 7.5V.
Anode current at 4000V, 1.8mA.
Beam current at 4000V, 4µA
Plates supply at 350VDC
Recommended Accessories
TEL EV 14 Power Unit
TEL 2502 Helmholtz Coils
TEL 2507 Secondary Coil
TEL 2810 Sweepgen
TEL 2811 Hivolt Bias
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TEL 2524 PERRIN TUBE
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