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  2. 6V6 - Wikipedia

    en.wikipedia.org/wiki/6V6

    Military specification 6V6 tubes and their equivalents. American military services contracted tubes from many sources through the U.S. War Department. They used a Joint Army-Navy Nomenclature System (AN System. JAN) Most of these tubes bear the JAN marking as well as a VT number (VT = vacuum tube). 3106 - 6V6 tube made in East Germany.

  3. 6AQ5 - Wikipedia

    en.wikipedia.org/wiki/6AQ5

    The 6AQ5 [1] (Mullard–Philips tube designation EL90) is a miniature 7-pin (B7G) audio power output pentode vacuum tube with ratings virtually identical to the 6V6 at 250 V. [2] It was commonly used as an output audio amplifier in tube TVs and radios. It was also used in transmitter circuits. [3]

  4. List of vacuum tubes - Wikipedia

    en.wikipedia.org/wiki/List_of_vacuum_tubes

    Continuously transmitting tubes: Maximum anode dissipation in W or kW in Class-C amplifier telegraphy; Pulsed transmitting tubes: Maximum peak anode current in A (number preceded by "P") Rectifiers: Maximum average anode current in mA; Thyratrons: Maximum average anode current: Less than 3 digits: in mA; 3 or more digits: 1st digit: =0 – in mA

  5. RETMA tube designation - Wikipedia

    en.wikipedia.org/wiki/RETMA_tube_designation

    The Radio Electronics Television Manufacturers' Association was formed in 1953, as a result of mergers with other trade standards organisations, such as the RMA.It was principally responsible for the standardised nomenclature for American vacuum tubes - however the standard itself had already been in use for a long time before 1953; for example, the 6L6 was introduced in July 1936.

  6. EL84 - Wikipedia

    en.wikipedia.org/wiki/EL84

    The EL84 is smaller and more sensitive than the octal 6V6 that was widely used around the world until the 1960s. An interchangeable North American type is the 6BQ5 (the RETMA tube designation name for the EL84). The EL84 was developed to eliminate the need for a driver tube in radios, so it has rather more gain than is usual in a power pentode.

  7. 6P1P - Wikipedia

    en.wikipedia.org/wiki/6P1P

    6P1P tube manufactured by Svetlana, USSR (winged "C" logo), 1971 A comparison of Svetlana 6P1P (left), 6P1P-EV and Beijing Electron Tube Factory 6P1 (right) The 6P1P (Russian: 6П1П) is a Soviet-made miniature 9-pin beam tetrode vacuum tube with ratings similar to the 6AQ5, EL90 and the 6V6. Because of a different pinout (a 9-pin base versus 7 ...

  8. Beam tetrode - Wikipedia

    en.wikipedia.org/wiki/Beam_tetrode

    A beam tetrode, sometimes called a beam power tube, is a type of vacuum tube or thermionic valve that has two grids and forms the electron stream from the cathode into multiple partially collimated beams to produce a low potential space charge region between the anode and screen grid to return anode secondary emission electrons to the anode ...

  9. Fender Tremolux - Wikipedia

    en.wikipedia.org/wiki/Fender_Tremolux

    Its rated power output was increased to 20 watts, its output tubes were a pair of 6BQ5/EL84 (the only Fender amp of that time to feature them) and they were operated at voltages in excess of their rated maximums and under fixed bias, but was soon changed to 35 watts and a pair of 6L6GC power tubes with a GZ34 rectifier (circuits 6G9-A and 6G9-B ...

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