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Industry: Email Alert RSS FeedTaming nonlinear transmission lines. (elimination of reflections on transmission lines)
EDN, November, 1997 by Mancini, Ron
It was 1967. The air in the RCA computer systems' circuits lab was electric with excitement. The circuits group had recommended a new saturated-logic IC - TTL - and was about to test it. The air of excitement soon turned into a cloud of despair, however, when the TTL would not drive moderately short lines without multiple pulsing.
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Necessity being the mother of invention, the group solved the problem by adding a diode from the input of the gate to ground. The diode clamped the negative edge to a diode drop below ground, thus preventing the transmission line from ringing back into the ...
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