[sdiy] LM13600 VCO

[Michael Ruberto]

In my first modular (the MBM) I had built a dual 13600 VCO and it has both 
schmitt triggers in a quad opamp and it does suffer from soft syncing. 
although I must admit I have not tested to see if that's what caused it. I 
tried rerouting all the ground wires to no avail.

~M


>From: Scott Gravenhorst <music.maker at gte.net>
>Reply-To: music.maker at gte.net
>To: synth-diy at dropmix.xs4all.nl
>Subject: [sdiy] LM13600 VCO Date: Sat, 21 Jun 2003 11:43:51 -0800
>
>I believe the answer to this one is "don't do it", but I'll
>ask anyway:
>
>A tri/square VCO can be made using an LM13600, but one
>amplifier is used as a schmitt trigger.  An opamp could be
>used for the schmitt trigger.  Is it a bad idea to use an
>LM13600 and an dual opamp to make a dual VCO?  I'm thinking
>that there would probably be coupling problems that would
>result in soft sync between the two VCOs.
>
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