This is a list of vacuum tubes or thermionic valves. Before the advent of semiconductor devices, hundreds of tube types were used in consumer and industrial electronics; today only a few types are still used in specialized applications.
Read more about List Of Vacuum Tubes: European Designation (with American Equivalents), European Designation, Special Quality, Russian Tubes, Classes of Vacuum Tube, Classes of Electronic Tube Containing Gas or Vapour
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“No, it wasn’t an accident, I didn’t say that. It was carefully planned, down to the tiniest mechanical and emotional detail. But it was a mistake. It was a beaut. In the end, somehow granted the time for examination, we shall find that our so-called civilization was gloriously destroyed by a handful of vacuum tubes and transistors. Probably faulty.”
—John Paxton (1911–1985)