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  2. 12AX7 - Wikipedia

    en.wikipedia.org/wiki/12AX7

    12AX7 (also known as ECC83 [1]) is a miniature dual-triode vacuum tube with high voltage gain.Developed around 1946 by RCA engineers [2] in Camden, New Jersey, under developmental number A-4522, it was released for public sale under the 12AX7 identifier on September 15, 1947.

  3. Vacuum tube battery - Wikipedia

    en.wikipedia.org/wiki/Vacuum_tube_battery

    EverReady was still manufacturing them in the 1970s. The most popular battery is the 9-volt type with taps every 1 + 1 ⁄ 2 volts that accept banana plugs. [1] A rare form of "C" battery is the bias cell, a button-size miniature battery designed to deliver a

  4. List of vacuum tubes - Wikipedia

    en.wikipedia.org/wiki/List_of_vacuum_tubes

    The following letter indicates the filament or cathode type, or the fill gas or other construction detail. The coding for vacuum devices differs between Philips (and other Continental European manufacturers) on the one hand and its Mullard subsidiary on the other. Philips vacuum devices: A; Microwave tubes: Output power <1W

  5. 6N14P - Wikipedia

    en.wikipedia.org/wiki/6N14P

    6N14P vacuum tube, USSR (Reflektor) 1965. The 6N14P (Russian: 6Н14П) is a miniature Russian-made medium gain dual triode vacuum tube, intended for service as a low-noise cascode amplifier at HF through VHF frequencies. It is a direct equivalent of ECC84 and 6CW7 vacuum tubes.

  6. This $9 miniature food vacuum will keep leftovers fresh for days

    www.aol.com/2020-04-14-always-fresh-seal-vac...

    This as-seen-on-TV gadget, the Always Fresh Seal Vac, is a game changer to make leftovers last while you're making more meals at home.

  7. Tube socket - Wikipedia

    en.wikipedia.org/wiki/Tube_socket

    Left to right: octal (top and bottom view), loctal, and miniature (top and side view) sockets. An early transistor socket and an integrated circuit socket are included for comparison. Tube sockets are electrical sockets into which vacuum tubes (electronic valves) can be plugged, holding them in place and providing terminals, which can be ...

  8. Vacuum pump - Wikipedia

    en.wikipedia.org/wiki/Vacuum_pump

    The Roots blower is one example of a vacuum pump. A vacuum pump is a type of pump device that draws gas particles from a sealed volume in order to leave behind a partial vacuum. The first vacuum pump was invented in 1650 by Otto von Guericke, and was preceded by the suction pump, which dates to antiquity. [1]

  9. Vacuum ejector - Wikipedia

    en.wikipedia.org/wiki/Vacuum_Ejector

    A vacuum ejector, or simply ejector, or aspirator, is a type of vacuum pump, which produces vacuum by means of the Venturi effect.. In an ejector, a working fluid (liquid or gaseous) flows through a jet nozzle into a tube that first narrows and then expands in cross-sectional area.