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    Fluorescent Magic Eye Tubes: Forrest Cook 2008-2015

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    josue otoniel

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    © All Rights Reserved
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    Fluorescent Magic Eye Tubes: Forrest Cook 2008-2015

    Uploaded by

    josue otoniel
    203 views8 pages

    Original Title

    Magic_eyes

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    Copyright:

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    203 views8 pages

    Fluorescent Magic Eye Tubes: Forrest Cook 2008-2015

    Uploaded by

    josue otoniel

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    © All Rights Reserved
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    Fluorescent Magic Eye Tubes

    © Forrest Cook 2008-2015

    Here is a collection of information on a variety of fluorescent magic eye vacuum


    tubes that I assembled. The emphasis is to have a collection of information for those
    who wish to design circuits that use this type of tube. The list includes a wide variety
    of fluorescent indicator tubes. Many of these tubes are available on eBay for
    reasonable prices.
    The 6U5/6E5 tube is one of the most common magic eye tubes; it was frequently
    used as a signal strength indicator in 1940s and 1950s consumer radios. The
    6U5/6E5 uses an antique 6 pin tube base and has a 6.3V filament. The 1629/VT138
    is electrically equivalent to the 6U5/6E5 except for its 12.6V filament voltage; it uses
    an octal tube base. These types of indicator tubes were sometimes referred to as
    "gooney eyes".
    Both the EM83, EMM801 and 6AL7 tubes are dual-bar displays that would be well
    suited for use as a stereo volume meter. The EM84/6FG6 and EM87/6HU6 are fairly
    common single channel tubes in Noval 9 pin base; they were originally used as
    tuning indicators in radios and as a recording level meter in tape recorders. The
    EM80/6BR5 and EM81 is in Noval 9 pin base and it has a fan-shaped display.
    Some rare types of eye tubes include the miniature 6355, 6977/DM160 and R2164
    tubes and special 6U5/6E5 tubes with a red lamp crystal over the center filament.
    Used as a radio tuning indicator, the combination 6AD6 eye tube and 6AE6 dual-
    plate triode control tube was designed so that one side of the eye tube was sensitive
    to weak signals and the other side was sensitive to strong signals.
    Many of the photos and schematics shown here were pulled from eBay ads and
    radiomuseum.org articles, some of them are originals.

    Type Display Side View Pinout Circuit


    (bottom)
    6AF6

    Octal

    6AL7

    Octal
    Fluorescent Magic Eye Tubes
    © Forrest Cook 2008-2015

    6ME5
    6M-E5

    Minature
    B7G

    Vf = 6,3 V

    6U5
    6E5
    (2E5)
    (EM35-
    6 pin)

    UX6

    (2E5  Vf = 2,5 V)

    1629
    VT138

    1 shadow Octal
    angle

    AM2
    Fluorescent Magic Eye Tubes
    © Forrest Cook 2008-2015

    DM70
    DM71
    1M3

    Vf = 1,4 V dc
    Va = 90 V dc

    DM160

    EAM86
    6GX8

    EM3

    EM4
    Fluorescent Magic Eye Tubes
    © Forrest Cook 2008-2015

    EM11

    Y8A

    EFM11
    Vf 6,3

    UFM11
    Vf 15

    Y8A

    EM34

    EM35
    Fluorescent Magic Eye Tubes
    © Forrest Cook 2008-2015

    EM35- Warning!
    single This tube has a different base
    range diagram than the better known
    (GB) Telefunken EM35!
    6U5G

    CV
    2747 Octal

    EM71

    Loctal-8, B8G

    EM80
    6BR5
    6Е1П/
    (6E1P)

    Noval B9A

    E82M
    5624
    Used in
    bridge
    measu-
    ring Noval, B9A
    units

    Black
    screen
    mask
    examp.
    Fluorescent Magic Eye Tubes
    © Forrest Cook 2008-2015

    EM83
    Vf 6,3V
    UM83
    Vf 20V

    Noval B9A

    EM84
    6FG6

    Noval B9A

    EM85
    6DU6

    Noval B9A

    EM87
    6HU6

    Noval B9A
    Fluorescent Magic Eye Tubes
    © Forrest Cook 2008-2015

    EMM
    801

    Noval B9A

    EMM
    803

    Noval B9A

    Fluorescent Tube Types


    Type Display Socket Note Vf
    2E5 Top 1 shadow angle UX6 6-pin ST bulb 2.5V
    6AB5 / 6N5 Top 1 shadow angle UX6 6-pin
    6AD6 Top 2 shadow angles Octal
    6AF6 / CV847 Top 2 ranges, 2 shadow angles Octal short
    6AL7 Top dual bar Octal
    6E5 / 6U5 / 6EG5 / Top 1 shadow angle UX6 6-pin ST bulb or
    6S5 / VT-215 / 12Z-E8 cylinder
    6E5C / 6E5S / 6U5G Top 1 shadow angle Octal cylinder
    6R-E13 Side split bar Noval, B9A
    6T5 Top circle (ring) Octal
    6X6 Top 2 shadow angles Octal ST bulb
    JAN-CRC-1629 / Top 1 shadow angle Octal 12 V
    VT-138
    NU 6355 Top 2 shadow angles B7G No amp! 6,3 V
    CV51 Top 1 shadow angle Octal ST bulb
    DM70 / 1M3 Side exclamation mark B8D, wires miniature 1,4 V
    DM71 / 1N3
    DM160 / 6977 / Side exclamation mark B5B, wires miniature 1,0 V
    CV5412
    E82M / 5624 Side rectangle Noval, B9A Dual control
    EAM86/6GX8 Side horizontal split bar Noval, B9A
    Fluorescent Magic Eye Tubes
    © Forrest Cook 2008-2015

    Type Display Socket Note Vf


    EFM11 Top 2 shadow angles Y8A (steel)
    EM1 / ME6 (ME4) Top 4 shadow angles P8A (well) ME4 Vf=4 V
    EM2 / C/EM2 / 6E12 Top 2 shadow angles P8A (well)
    EM3 Top 2 shadow angles P8A (well)
    EM4 Top 2 ranges, 2 shadow angles P8A (well)
    EM5 / WE12 Top 2 ranges, 4 shadow angles P8A (well) Can replace
    EM4
    EM11 Top 2 ranges, 4 shadow angles Y8A (steel)
    EM31 / AW6 / CV1077 Top 4 shadow angles Octal
    EM34 / 6AF7 / Top 2 ranges, 2 shadow angles Octal
    6CD7 / 6M2
    EM35 Top 2 ranges, 4 shadow angles Octal
    EM71 / EM71a Top half circle 1 shadow angle Locktal B8G UM85 HM71
    (HM71, 12M71) Vf=19 V Vf=12,6 V
    EM72 Top half circle 2 shadow angles Locktal B8G Full or off!
    Omitted areas!
    EM80 / 6BR5 / 6E1P Side fan 2 shadow angles Noval, B9A UM8
    (UM80/19BR5) Vf = 19 V
    EM81 / 6DA5 Side fan 2 shadow angles Noval, B9A Can replace
    EM80
    EM83 Side double trapezoids Noval, B9A
    EM84 / 6FG6 / Side bar Noval, B9A PM84
    6E3P Vf = 4,2 V
    (PM84 / 9FG6) UM84
    (UM84) Vf = 12 V
    EM85 / 6DH7 / Side fan 1 shadow angle Noval, B9A HM85
    6DU6 (HM85) Vf=12,6 V
    (UM85 / 19DH7) UM85
    Vf = 19 V
    EM87 / 6HU6 Side bar Noval, B9A
    EM800 Side bar, asymmetric Noval, B9A
    EM840 Side bar Noval, B9A
    EMM801 Side double split bars Noval, B9A
    EMM803 Side split bar w. pilot indicator Noval, B9A
    ME4 / AM1 Top 1 shadow angle P8A (well) Vf= 4 V
    ME41 / AW5 / Top 1 shadow angle Octal Vf= 4 V
    (CV1359) (Mazda)
    Y61 (Osram-GB) / Top 1 shadow angle Octal Vf= 6,3 V
    (63ME / 6U5G)
    Y63 (Osram-GB) / Top 1 shadow angle Octal Vf= 6,3 V
    (CV1103 / 6G5G)

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