From tmoravan@netcom.com Sat Nov 19 11:06:33 1994
Date: Sat, 19 Nov 1994 04:16:51 -0800 (PST)
From: Tom Moravansky <tmoravan@netcom.com>
To: analog <analogue@magnus.acs.ohio-state.edu>
Subject: S-trig to voltage circuit

There was someone asking about a circuit to generate voltage triggers from
an S-trigger out.  Well, here's the ASCII version of the circuit that
appeared in the March 1982 Keyboard  (Kraftwerk on the cover!)  Note that
this is for a 0/9v v-trigger.  If you need 15 volts, I'm sure it's a simple
change.


This will produce a voltage
trigger in response to an    
s-trigger out.  The trigger                 Off
voltage will be 0 or 9 volts.            ___o       ___________
Close the switch to use, open           /          | 9-volt    |
it to save the battery life.     |-----o    o---- +| battery   |-- ground
                 ________________|          On     |___________|
                 \               \          
                 /               /         
             10k \           10k \         
                 /               /         
                 |               |----------------------- to tip of jack
                 |               |                        sleeve to ground
                 |    100k       /                                        
      ___________|___/\/\/\___|/
      |                       |\   2N3904 or equivalent
 1   -|-  S-trigger              \ 
    _____     in                 |
 2    |                          |
      |                         ---
      |                  ground  -
     ---  ground
      -
