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28846Re: Burroughs Self-Scan Display

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  • joshbensadon
    Jan 4, 2013
      --- In midatlanticretro@yahoogroups.com, Dave McGuire wrote:
      > Google hits for that part number suggest that 250V is what you want.
      > I doubt that would affect the scanning, though. That's a guess, assuming
      > the control logic is separate from the drive, but that seems reasonable.
      > -Dave

      Thanks Dave, I've set it to 250V but it still does not scan. Jeff Jonas sent me the data, theory and application data. I've reversed engineered the display for a complete schematic. All signals to the display are as they should be (within 5%) but the display does not reset the scan to the first column and sometimes if I play with the power, a middle column lights up but does not advance. Most of the time, it's just the last column lighting up. It was great learning experience, as I've never seen a self-scanning display before, very cool.

      Do you think anyone would be interested in the schematics I drew? where should I upload them to?

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