Hello! You need at least one signal to get the logic module to
output a signal. And you'll need at least 2 signals at the inputs to
make it work as a logic module. On the lower part of the A166 (the
inverter): If nothing is connected to the A166's inv. inputs the
outs are always high. As you probably assumed NAND, NOR, NEXOR are
simply inverted AND, OR, EXOR signals. Not sure wether I get your
point so I hope that helps.
Never used a Switch-Trig in my system. But the A165 should be the
way to go. Have you tried feeding a definitely working trigger
inverted by your A165 to trig an A140 Just to make sure that your
inv. works fine
Regards, Ingo

--- In Doepfer_a100@yahoogroups.com , sfrules <sfrules@t...> wrote:
>
> Hello,
>
> Help needed!
>
> I have a MicroMoog synth I want to use to control my
> Doepfer. The Micro uses Switch-Triggering for GATE. If I (now)
understand
> correctly, that means no voltage but short to ground when a key is
> pressed. I need to trigger the envelopes...
>
> I have tried the A-165 Trigger Modifier. It does nothing. It does
not
> detect a falling edge - or rising edge for that matter.
>
> Would the A-175 Voltage Inverter work
> Would the A-167 Analog Comparator work
> Would the A-166 Logic work
>
> Is it possible to do this using just 1 module
> What are you folks doing out there
>
> And while we're on the subject, How do you connect the sections of
the A-166
> to obtain NAND, NOR, or NEXOR Or putting it another way, does it
> output a
> voltage (logical 1) when no inputs (logical 0) are in use
>
> Thanks in advance,
>
> sfrules