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Become a Member Become a Member
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  • Topics
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Projects from cvdo

  • Repurposing a HP5221B frequency counter as a nixie clock

    Repurposing a HP5221B frequency counter as a nixie clock

    by cvdo
    cvdo
    I had this beautiful HP frequency counter with nixie readout, but not...
    4.3k 3
  • Princeton Electrometer Repair project

    Princeton Electrometer Repair project

    by cvdo
    cvdo
    An electrometer is sort of a multimeter but with an insanely high inpu...
    3.2k 2
  • Negative 150V power supply

    Negative 150V power supply

    by cvdo
    cvdo
    For a nixie-ish kind of project with ZM1050's I need a power supply of...
    4.0k 0
  • I finally found a useful application for dekatrons!

    I finally found a useful application for dekatrons!

    by cvdo
    cvdo
    Dekatrons are gas filled counting tubes dating from the fifties. For a...
    11.8k 3
  • Vacuum Tube Curve Tracer: remake of Tektronix 570

    Vacuum Tube Curve Tracer: remake of Tektronix 570

    by cvdo
    cvdo
    Measure vacuum tubes (triodes, pentodes) as they did in the 1950's wit...
    30.2k 9
  • Upgrade Magic Eye EM84 to Windows10

    Upgrade Magic Eye EM84 to Windows10

    by cvdo
    cvdo
    This Elektor-project from 2010 uses an EM84 magic eye to display the...
    12.8k 6

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