Cross-talk square-wave?

Noel Chiappa jnc at mercury.lcs.mit.edu
Fri Mar 31 13:01:31 CDT 2017


    > From: Brent Hilpert

    > I don't have a full enough picture of the circuit and circumstances to
    > provide a definitive suggestion but, some principles:
    > ...
    > It's not clear C-coupling is what's going on here (the wave shape looks
    > pretty sharp for what I understand of the circuit/layout).

Thanks for taking the time for that detailed message.

I suspect, however, that Jon Elson has nailed it (thanks Jon :-); if that's
what's happening, it explains why we couldn't understand what the devil was
going on!

    > (You've mentioned both 470K and 270K for the R, could make a difference
    > to the analysis).

Yeah, that was just a typo; going from memory.

      Noel


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