PIRA 5M20.00 TUBES

DCS #DEMONSTRATIONREFERENCEABSTRACT
5M20.00Tubes
5M20.10glow dischargePIRA 1000
5M20.10glow dischargeA-12Various discharge phenomena are described from atmospheric to high vacuum.
5M20.10glow-discharge tubeA-11The pressure is reduced on a large tube while high voltage dc is applied to the electrodes.
5M20.10gaseous discharge tubeA-2cPump down a long discharge tube to show Crookes' dark space, negative glow, Faraday dark space, striations, etc.
5M20.12potential required for glow dischargA-14Show the minimum voltage for a neon glow tube to discharge.
5M20.15thermionic effectA-78Use a tube to show the thermionic effect in a vacuum.
5M20.20special purpose discharge tubesPIRA 1000
5M20.20special-purpose discharge tubesA-13Gas discharge tubes for spectra, fluorescence of minerals, line tubes, paddle wheel, etc. are mentioned.
5M20.20five cathode ray tubesA-2aSpecial tubes that demonstrate five properties of cathode rays.
5M20.25electron beamsA-18A tube with a replaceable lime spot (or barium, strontium, and calcium oxides) hot cathode gives a brilliant beam. Diagram.
5M20.28electron focusingA-21Three types of focusing of the beam: residual gas, electrostatic, and magnetic.
5M20.30gas filled tubes - two element typeA-87A circuit for demonstrating the mercury-vapor rectifier tube.
5M20.31hot-cathode dischargesA-16The Tungar rectifier bulb and the phanotron mercury-vapor rectifier illustrate the role of cathode emission in discharge.
5M20.32diode tubesA-9aThe Welch demonstration power supply board is used to explain the theory of the diode tube.
5M20.35thyratron tubeA-17The function of the grid in a discharge tube is shown with a thyratron.
5M20.36gas filled tubes - grid controlledA-88A circuit for demonstrating the thyratron tube.
5M20.40three element tube curvesA-81A circuit for obtaining the characteristic curves of a triode.
5M20.41"fresh air three electrode tube"A-82Elements of a three electrode tube are placed in a bell jar.
5M20.42three electrode tube modelA-83Steel balls represent electrons in a mechanical model of a triode. Picture.
5M20.43three element tube - electrostaticA-84A circuit for controlling the plate current of a three or four element tube.
5M20.44the triodeA-9bA circuit for demonstration the principles of a triode tube. Reference: AJP 23(9),384.
5M20.46triode demonstrator unitAJP 29(9),640Apparatus review of the Modern and Classical Instruments triode demonstrator board. (1961)
5M20.50soap bubble model of tubes33-2.1Soap bubbles moving through plates connected to a Van de Graaff generator simulate behavior of electron tubes. Picture.

ReferenceDescription
M-1Sutton
Ma-1Freier & Anderson
M-1dHilton
8-2.8Meiners
1A12.01University of Minnesota Handbook
AJP 52(1),85American Journal of Physics
TPT 15(5),300The Physics Teacher
Disc 01-01The Video Encyclopedia of Physics Demonstrations

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