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Vacuum tube symbols

Electron tube in which is practiced a high enough pressure so that its electrical properties are not substantially modified by the ionization of residual gas or vapor.
Also known as vacuum tubes and thermionic valves.

Symbology / Vacuum tube symbols / Electron tubes / Thermoinic valves
Symbol Description   Symbol Description
Vacuum tube, diode symbol
Vacuum tube, electronic valve, Diodo
Vacuum tube, electronic valve
Diode
Vacuum tube, electronic valve, Diodo
  Vacuum tube / electronci valve symbols, triode symbol
Vacuum tube, electronic valve, Triodo
Vacuum tube, electronic valve
Triode
Vacuum tube, electronic valve, Triodo
Double diode symbol
Double diode
Vacuum tube
Double diode
Double diode
  Double triode symbol
Double triode
Vacuum tube
Double triode
Double triode
Pentode symbol
Pentode
Pentode
Pentode
  Hexode symbol Hexode
Heptode symbol Heptode   Octode symbol Octode
Nonode symbol Nonode   Krytron symbol Krytron
Thyratron symbol
Thyratron
Thyratron
Thyratron
  Photocell symbol
Photocell
Photocell
Photocell
Ignitron symbol
Ignitron
Ignitron
Ignitron
  Photocell symbol Photocell
Célula fotoeléctrica
Dissipator cold cathode symbol Dissipator cold cathode   Effluvia valve symbol Effluvia valve
Symbol of the tetrode effluvia with auxilar anode and control grid Tetrode effluvia with auxilar anode and control grid   Rectifier effluvia valve symbol Rectifier effluvia valve
Símbolo de la lámpara de Neón
Neon lamp
Neon lamp
Neon lamp
  Lightning Light lamp Lightning light lamp
Cathode ray tube, CRT symbol
Cathode ray tube, CRT
  CRT
Cathode ray tube
Cathode ray tube, CRT

Basic elements symbols

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Vacuum tube, capsule, ampoule symbol Vacuum tube, capsule, ampoule   Grid symbol Grid
Anode symbol Anode   Cathode symbol Cathode
Indirectly heated cathode symbol Indirectly heated cathode   Directly heated cathode symbol Directly heated cathode
Filament / Heater symbol Filament / Heater      

Pinout vacuum tubes

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A / P Anode, Plate   G Grip
C / K Cathode, emitter   S Screen
I Ignitor   Sup Suppressor grid
H / F Heater, Filament   Pines en un triodo Example of pins in triode

Symbols of sockets of vacuum tubes

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Decal socket symbol Decal socket   Noval socket symbol Noval socket
Magnoval socket symbol Magnoval socket   Octal socket symbol Octal socket
Rimlock socket symbol Rimlock socket   Miniature socket symbol Miniature socket
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