Well, it isn't quite that simple. You want the output levels to be
independent of the gate level, so that requires internal gate
processing. You also want a good curve on the release, so it reaches
cutoff at zero after a reasonable time. A nice example for an AR EG is
found in Electronotes #92, p. 13. Ian Fritz published a design that
derived from an earlier idea by Carl Hovey in EN#31. I would use
different gate processing than Ian's, which is TTL based. I am thinking
of breadboarding this on a MUUB-4 and entering the contest. It will be
interesting to compare three different AR EGs on the MUUB-4, with 1, 2,
or 4 EG circuits.
-Richard Brewster
Scott Juskiw wrote:
>Using the simplest possible AR (one op-amp per EG), you can fit 4 of
>them on a MUUB-4. If you want a fancier circuit, then you'll get 2,
>or 1 EG per MUUB-4. I'm not publishing any MUUB circuits until after
>the contest is over (Dec. 1). This might be a good contest entry
>(hint hint).
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>>Cool! Assuming (and this would be a good assumption) that I am
>>completely lame when it comes to electronics, is there somewhere where
>>a circuit like this is diagrammed? How many EGs on one of your big
>>MUUBs? 4?
>>
>>
>>
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