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Sylvania Electric Products. Sylvania Electric Products Inc. was an American manufacturer of diverse electrical equipment, including at various times radio transceivers, vacuum tubes, semiconductors, and mainframe computers such as MOBIDIC. They were one of the companies involved in the development of the COBOL programming language.
The company was established in 1889 as the Ya. M. Aivaz (Russian: Я. М. Айваз) Factory. [4] Svetlana was a major producer of vacuum tubes.In 1937, the Soviet Union purchased a tube assembly line from RCA, including production licenses and initial staff training, and installed it on the St Petersburg plant. [5]
Futaba Corporation (双葉電子工業株式会社, Futaba Denshi Kōgyō Kabushiki-gaisha) is a Japanese company founded in 1948, originally to produce vacuum tubes. [3] As time passed, production and elemental techniques of the vacuum tube transformed into the manufacturing of vacuum fluorescent displays (VFDs), tool and die set components, radio control equipment and OLED displays.
A vacuum tube, electron tube, [ 1][ 2][ 3] 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. The type known as a thermionic tube or thermionic valve utilizes thermionic emission of electrons from a ...
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. In technical terms, JJ produces triodes, beam tetrodes and power ...
Eimac. Eimac is a trade mark of Eimac Products, part of the Microwave Power Products Division of Communications & Power Industries. It produces power vacuum tubes for radio frequency applications such as broadcast and radar transmitters. The company name is an initialism from the names of the founders, William Eitel and Jack McCullough.
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.
Valve Amplification Company. Valve Amplification Company ( VAC) is a U.S. supplier of high end audio electronics, principally utilizing vacuum tube technology. It was founded in 1990 by Kevin Hayes (b. 1959) and Channing W. Hayes (1923–2009). A Florida corporation, as of 2011 it is located in Sarasota, Florida, U.S.
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