Grounding can be bad sometimes

Posted by marc, Sun May 27 22:32:11 UTC 2007

So, what did I do this weekend? I watched the DFB Cup finals at a friend's new flat. We used a beamer and a VCR to get the TV Signal stretched to a decent watchable size on the wall :) beamer.jpg This setup poses some difficulties though. Because of the two sources of grounding (on the TV-Cable and on the power cables), the analogue signals get distorted and the signal/noise ratio begins to suck and visual distortions begin to manifest in the picture. Colors/crightness/contrast begin to look strange and the picture starts "jumping" (up to the point where to top half and the bottom half of a frame are "split") Skizze-Beamer-Abend.png Thanks to a savvy tech monkey we got a clear picture in the end by removing the grounding of the TV Cable and blocking the grounding of the "schuko" plug by a piece of paper :) schukomod.jpg Who needs grounding on a beamer with a complete plastic casing anyway... p.s. you could die if you try this at home... so DON'T!!!!!!

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  1. Michael 04.12.08 / 14PM
    evil tech monkey says: n1
  2. Kai Jäger 04.12.08 / 14PM
    The geekiness of this cannot be exceeded. You even made a diagram!? Anyway, messing with electricity is evil.
  3. Marc 04.12.08 / 14PM
    It's evil yet fun! Just like sex before marriage :D
  4. Michael 04.12.08 / 14PM
    evil sex monkey says: n1
  5. fReUnD 04.12.08 / 14PM
    Also ich hau da ja immer drauf!