[sdiy] ens 76 eg 1...

[Magus Ship]

yes, I have that .001uF cap in series with the trigger, still same
problem...what else could cause the DC coupling?
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>From: Grant Richter <grichter at asapnet.net>
>To: "G. Russom" <elmystico at earthlink.net>, synth <synth-diy at dropmix.xs4all.nl>
>Subject: Re: [sdiy] ens 76 eg 1...
>Date: Thu, Feb 21, 2002, 12:37 PM
>

>The Electronotes circuit assumes the trigger pulse is high for only 50 uS.
>You need to put a 0.001 uF (1000 pF) cap in series with the trigger input.
>You probably have the trigger DC coupled and that is preventing correct
>action of the SR flipflop.
>
>> From: "G. Russom" <elmystico at earthlink.net>
>> Date: Thu, 21 Feb 2002 01:45:12 -0500
>> To: synth <synth-diy at dropmix.xs4all.nl>
>> Subject: [sdiy] ens 76 eg 1...
>> 
>> I built the electronotes eg 1 from ENS 76.  OK... the D, S, and R stages
>> work properly.  But the Attack stage only works the first time i turn on the
>> synth... after that it switches to a DSR envelope.  weird...  We are working
>> with an RS flip flop here built from two crossed NOR gates.  When the
>> trigger triggers it should send NOR gate A low which in turn send NOR gate B
>> High and flips the analog switch letting the voltage through the attack pot
>> and onto the envelope capacitor.  But it only works once or twice.  I'm
>> using the same signal from an LFO for the TRIG and GATE.  Is this signal too
>> long for the trigger?  Anybody run into anything like this?
>> 
>