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  2. Sylvania Electric Products - Wikipedia

    en.wikipedia.org/wiki/Sylvania_Electric_Products

    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.

  3. Cathode-ray tube - Wikipedia

    en.wikipedia.org/wiki/Cathode-ray_tube

    The only visible differences are the single electron gun, the uniform white phosphor coating, and the lack of a shadow mask. A cathode-ray tube ( CRT) is a vacuum tube containing one or more electron guns, which emit electron beams that are manipulated to display images on a phosphorescent screen. [ 2 ]

  4. List of vacuum tubes - Wikipedia

    en.wikipedia.org/wiki/List_of_vacuum_tubes

    YD1336 – 1.8 kW, Air-cooled, UHF power triode. YD1342 – 30 MHz, 530 kW, Water-cooled RF power triode. YD1352S (8867, DX334) – 5 MHz, 2 kW, Water-cooled Neotron, a gridless field-effect tube where a magnetically focused electron beam is modulated by varying the voltage of a gate electrode surrounding it.

  5. Sylvania (brand) - Wikipedia

    en.wikipedia.org/wiki/Sylvania_(brand)

    Sylvania is a Canadian multinational electronics corporation headquartered in Toronto, Ontario, Canada. The company is owned in North America by Osram Sylvania and, outside of North America, Feilo Sylvania. The two license the brand to other companies for various products. The Sylvania brand was originally owned by Sylvania Electric Products.

  6. 6V6 - Wikipedia

    en.wikipedia.org/wiki/6V6

    6V6 Octal socket basing diagram. 1 - * Unconnected in all versions except for the shell connection of the metal 6V6 2 & 7 - Filament / Heater 3 - Anode / Plate 4 - Grid 2 / Screen Grid 5 - Grid 1 / Control Grid 6 - No connection. Pin normally absent 8 - Cathode & Beam-Forming Plates. The 6V6 is a beam-power tetrode vacuum tube.

  7. List of television manufacturers - Wikipedia

    en.wikipedia.org/wiki/List_of_television...

    Formerly part of Harvard International Amstrad - - Andrea Electronics 1947 1978 Apex Digital: 1997 2010 Apple Inc. 1993 present Released the Macintosh TV in 1993 Arcam: 2011 present Arise India: 2012 present AGA AB: 1952 - Audiovox - - Now Voxx International: AWA: 1956 1974 Baird: 1926 1980 made the first TVs, brand name after 1956 Bang ...

  8. What you need to know about America’s shockingly good ...

    www.aol.com/know-america-shockingly-good...

    Consumer spending accounts for the vast majority of the US economy, about 70% of it. Spending accelerated sharply in the second quarter to an annual rate of 2.3%, up from 1.5% in the first quarter ...

  9. EL34 - Wikipedia

    en.wikipedia.org/wiki/EL34

    The EL34 is a thermionic vacuum tube of the power pentode type. The EL34 was introduced in 1955 by Mullard, who were owned by Philips. [1] The EL34 has an octal base (indicated by the '3' in the part number) and is found mainly in the final output stages of audio amplification circuits; it was also designed to be suitable as a series regulator by virtue of its high permissible voltage between ...

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