Outline for Vacuum Tubes:

1. Common Types
   1. Rectifiers
      1. Signal
      2. Power
   2. Amplifiers
      1. Signal
      2. Power
      3. High Frequency
2. Special Types
   1. "Eye" Indicator
   2. Cathode Ray Tube (CRT)
      1. Electrostatic Deflection
      2. Electromagnetic Deflection
   3. Traveling Wave Tube (TWT)
   4. Klystron
   5. Magnetron
   6. Photomultiplier
   7. Nixie
   8. Flourescent
   9. Image Convertor
   10. Lighthouse
   11. Inductive Output Tube ("IOT", for UHF amplifiers > 10 KW)
   12. Acorn
   13. Peanut
3. Classes by Elements
   1. Diode
   2. Triode
   3. Tetrode
   4. Pentode
   5. Heptode
   6. Beam Pentode
4. Classes by Usage
   1. Sharp Cut-Off
   2. Remote Cut-Off
   3. Multi-Section
   4. Gas Filled
      1. Rectifier
      2. Regulator
      3. Thyratron
      4. Photocell
   5. Mercury
      1. Rectifier
      2. Thyratron
5. Elements
   1. Filament (Heater)
   2. Cathode
      1. Directly Heated Cathode
      2. Indirectly Heated Cathode
      3. Cold Cathode
   3. Grids
      1. Control Grid
      2. Screen Grid
      3. Accelerator (not always a Grid)
      4. Suppressor Grid
   4. Anode (Plate)
   5. Beam Dflecting Plate
   6. Getter

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Vacuum Tubes Outline - SfE-DCS, ddf - 08/03/2001