http://www.vacuumtubes.com/antique.html WebThe simplest vacuum tube, the diode (i.e. Fleming valve ), invented in 1904 by John Ambrose Fleming, contains only a heated electron-emitting cathode and an anode. …
Return of the Vacuum Tube Science AAAS
WebVacuum Tube Valley Lakeport, CA. Rebuild kits, cable, vintage caps, parts, NOS/vintage tubes, radio & tuner tubes, RF/sweep tubes, guitar amp tubes. VacuumTubes.net 800-326-4140 La Crosse, FL. Maintains a working inventory of over 5,000 different radio tubes, amplifier tubes, and vacuum tubes in stock at all times. WebThe 11 Greatest Vacuum Tubes You’ve Never Heard Of These vacuum devices stood guard during the Cold War, advanced particle physics, treated cancer patients, and made the Beatles sound good By Carter M. Armstrong From left, Thales; Robert Phillips; RCA quintillions of solid-state devices, should you even care about vacuum tubes? You … graduated rent provision
State of the Vacuum Tube Industry 2016
WebIn terms of where tubes are made, 7 of the 15 factories are in Europe (3 in Czech Republic, 1 in Germany, 2 in Russia, and 1 in Slovakia), 4 are in China, 3 are in Japan, and 1 is in the USA. In other words, Europe has the most tube factories, especially the central and eastern portions. China comes in second place. Web23 jun. 2014 · By the mid-1970s, the only vacuum tubes you could find in Western electronics were hidden away in certain kinds of specialized equipment—not counting the ubiquitous picture tubes of television sets. Web24 sep. 2014 · A 1983 Motorola DynaTAC 8000X, one of the first wireless phones ever produced, recently sold at auction for $550. Even though the seller made it clear that they don't know if it will charge or even turn on. And this wasn't a freak sale to a confused, old, rich person; similar phones have sold for around the same price. graduated response early years