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  2. Mechanical television - Wikipedia

    en.wikipedia.org/wiki/Mechanical_television

    This system produced a dim orange image 1.5 inches (3.8 cm) square, with 48 scan lines, at a frame rate of 7.5 frames per second. Mechanical television or mechanical scan television is an obsolete television system that relies on a mechanical scanning device, such as a rotating disk with holes in it or a rotating mirror drum, to scan the scene ...

  3. Tung-Sol - Wikipedia

    en.wikipedia.org/wiki/Tung-Sol

    Electronic Designs July 15, 1956 —20.79 MB PDF viewable, 160 pages features Chatham tube 5998 ad. Electronic Designs August 8, 1956—PDF viewable, 165 pages features Miniature VR Tube Type 6627/OB2WA info and tube 6080WA ad. TS October 1, 1959 tube price/parts list Tung-Sol 1959 OEM Price List- 6 pages; TS tube technical data Tung-Sol ...

  4. JD Squared - Wikipedia

    en.wikipedia.org/wiki/JD_Squared

    The Model 1 Bender became popular because it was one of the few affordable manual tube benders on the fabricating market. However, the Model 1 Bender could only bend 90 degrees. In 1988 JD Squared released the Model 2 Tube bender with 180 degree bend capability. In 1992 the company changed its name to JD Squared, Inc. and released the Model 3 ...

  5. 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.

  6. Photomultiplier tube - Wikipedia

    en.wikipedia.org/wiki/Photomultiplier_Tube

    Photomultiplier tubes ( photomultipliers or PMTs for short) are extremely sensitive detectors of light in the ultraviolet, visible, and near-infrared ranges of the electromagnetic spectrum. They are members of the class of vacuum tubes, more specifically vacuum phototubes. These detectors multiply the current produced by incident light by as ...

  7. AOL Mail

    mail.aol.com

    You can find instant answers on our AOL Mail help page. Should you need additional assistance we have experts available around the clock at 800-730-2563.

  8. Parts book - Wikipedia

    en.wikipedia.org/wiki/Parts_book

    Parts books were often issued as microfiche, though this has fallen out of favour. Now, many manufacturers offer this information digitally in an electronic parts catalogue. This can be locally installed software, or a centrally hosted web application. Usually, an electronic parts catalogue enables the user to virtually disassemble the product ...

  9. Vacuum-tube computer - Wikipedia

    en.wikipedia.org/wiki/Vacuum-tube_computer

    A vacuum-tube computer, now termed a first-generation computer, is a computer that uses vacuum tubes for logic circuitry. While the history of mechanical aids to computation goes back centuries, if not millennia, the history of vacuum tube computers is confined to the middle of the 20th century. Lee De Forest invented the triode in 1906.

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