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This is a list of vacuum tubes or thermionic valves, and low-pressure gas-filled tubes, or discharge tubes. Before the advent of semiconductor devices, thousands of tube types were used in consumer electronics.
Most post-war European thermionic valve (vacuum tube) manufacturers have used the Mullard–Philips tube designation naming scheme. Special quality variants may have the letter "S" appended, or the device description letters may be swapped with the numerals (e.g. an E82CC is a special quality version of an ECC82)
Later thermionic vacuum tubes, mostly miniature style, some with top cap connections for higher voltages. A vacuum tube, electron tube, [1] [2] [3] thermionic valve (British usage), or tube (North America) [4] is a device that controls electric current flow in a high vacuum between electrodes to which an electric potential difference has been applied.
Western Electric Export Corporation (or simply Western Electric) is a manufacturer of vacuum tubes and high end audio gear. Based in Rossville, Georgia, the company builds an ultra-premium version of the 300B electron tube. It traces its roots to 1872 with the Bell Telephone Company and the original Western Electric. The original AT&T-based ...
Amperex tubes were original equipment parts in many models of Tektronix and Hewlett-Packard test equipment. Although Amperex stopped making vacuum tubes long ago, hoards of new old stock (especially the original "Bugle Boy" series) are traded for profit, and other manufacturers produced compatible tubes more recently.
Mullard Limited was a British manufacturer of electronic components. The Mullard Radio Valve Co. Ltd. of Southfields , London, was founded in 1920 by Captain Stanley R. Mullard , who had previously designed thermionic valves (US term: vacuum tube) for the Admiralty before becoming managing director of the Z Electric Lamp Co. [ 2 ] The company ...
JJ Electronic, s.r.o is a Slovak electronic component manufacturer, and one of the world's remaining producers of vacuum tubes. It is based in Čadca , in the Kysuce region of Slovakia . Most of its products are audio receiving tubes, mainly used for guitar and hi-fi amplifiers.
The semiconductor production market increased from four companies in 1951 that made transistors for the commercial market to 15 in 1953. And out of those 15 manufacturers, Tung-Sol was one of eight of the companies making transistors as a major manufacturer of vacuum tubes. [32]
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