[sdiy] Pin 14 on the 3340

[Roman]

My guess is that's for protecting that sensitive entry from picking up RF interferences, which when rectified on this transistor might lead to considerable pitch shift.   Roman  Dnia 17 lipca 2018 19:13 Oakley Sound <oakleysound at btinternet.com> napisał(a):  So I have just noticed that Oberheim repeatedly use a 100nF capacitor to  ground from pin 14 of the CEM3340 in parallel with the scale setting  resistor Rs (which is normally around 1K8).   Does anyone see any advantage to having this capacitor? No other  'vintage' circuit nor the CEM3340/AS3340 datasheet show such capacitor.   Tony   www.oakleysound.com  ______________________________  Synth-diy mailing list   Synth-diy at synth-diy.org  synth-diy.org synth-diy.org
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://synth-diy.org/pipermail/synth-diy/attachments/20180718/6cc64fc6/attachment.htm>