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Thread: Replacing a VAXmate Flyback Transformer

  1. #1

    Default Replacing a VAXmate Flyback Transformer

    I am about as certain as I can be that the flyback transformer from my VAXmate monitor board has failed. The VAXmate one is a Tai-Ho TH-1802B (DEC P/N 16-27188-01) and according the Technical
    Description has a primary voltage of +28V and produces auxiliary voltages as

    +13.1kV @85uA max
    +950V @200uA
    +45V @75mA max
    -100V @1.2mA

    It is hard to find datasheets for the flybacks you see on ebay etc, does anyone know how to identify a possibly compatible replacement (should such a thing exist!)

  2. #2
    Join Date
    May 2018
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    HR Deimen have schematics for their replacement parts but they dont seem to have an equivalent for yours.
    Current fleet
    TRS80 Model 4 - BBC B - Tatung Einstein - PCW9512 - PET 3032 - C64 - ZX81 - Spectrum 48K - Amiga A500 - VAX 3100,3300,4000VLC & 4000 Model 96 - Apple II europlus - Apple iMAC G3. Sharp MZ-80K. - DEC Micro PDP 11/73 - IBM 5160 XT - Multibus 286/10.


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